Most Recent Product Questions
  1. Rated: 0
    1/25/2021 10:56 AM Baader 2" Cool-Ceramic Safety Herschel Prism (Visual / Photographic)
    I will use the prism with a 1.25 inch clicklock and have bought the 2 inch to T-2 adapter to do so. How can I unscrew the 3.0 ND filter from the threaded extension? It seems to be stuck or glued to it and I cannot apply more force without risking damage to. The solar continuum filter unthreaded easily.

    Answer rated: 0
    The filter is not glued in, but unfortunately, sometimes threads get stuck. This may happen also with other adapters. They get even harder to unscrew when you grab them at the side, which can change their shape slightly.
    We recommend to put them flat on a rubber mat (e.g. sponge rubber) and put another piece of rubber on top of it. Then put your flat hand on the upper rubber mat and rotate it - this way, the pressure is distributed on the whole filter cell, and the the two parts shut come off easily.
    Answer by: Baader Web Team (Admin) on Jan 25, 2021 12:06:00 PM
  2. Rated: 0
    1/24/2021 12:39 AM Baader M48 Spacer Ring for MPCC III / Protective EOS T-Ring
    I have a Nikon D5300 and have been using the MPCC with an M42 t-ring. However, I would like to try to use the larger aperture of the M48 because the vignetting may be causing issues in some cases. Do you have an adapter that will attach a Nikon M48 ring to the MPCC with the correct back spacing? Or do you make a Nikon Protective T-Ring that works with this spacer?

    Answer rated: 0
    You can use
    Reducing piece M48a / T-2i # 2958553
    with an optical length of 0,7mm to mount the M48-ring directly to the MPCC. That's good enough, as the distance should be 55+/-1mm, and that close to the MPCC, vignetting is no problem, as the lens is smaller, anyway.
    But please take a look at the Nikon bayonet or the adapter: The clear aperture of Nikon F-mount is relatively small, so that vignetting might be caused by the T-ring or camera body.
    Answer by: Baader Web Team (Admin) on Jan 25, 2021 9:52:00 AM
  3. Rated: 1
    1/23/2021 2:35 AM 2" MPCC Mark III (Multi-Purpose Coma Corrector for Newtons)
    I cannot get backfocus.
    I am using an Orion Thin Off Axis Guider and a Full Frame Canon 6D Markii.
    Your specs require the MPCC to be converted to M48 and for full frame the back spacing needs to be 57.5mm. But there is no adapter available on the market to get the extra 2.0-2.5mm I need.
    Canon SLR 44mm
    Orion Thin Guider 11mm
    Scope is a GSO 200mm F4 Newtonian.
    I have tried it using the M42 method with severe vignetting due to it not being full aperature and full frame camera in use.
    I am out of ideas and would appreciate your help.

    Answer rated: 0
    You can use Reducing piece M48a / T-2i # 2958553 with an optical length of 0,7mm to mount the M48-ring directly to the MPCC. That's good enough, as the distance should be 55+/-1mm, and that close to the MPCC, vignetting is no problem, as the lens is smaller, anyway.
    Answer by: Baader Web Team (Admin) on Jan 25, 2021 9:17:00 AM
  4. Rated: 0
    1/19/2021 8:47 PM 2" MPCC Mark III (Multi-Purpose Coma Corrector for Newtons)
    What specific camera adapter and spacers do I need to achieve the proper 55mm of back focus for photographic purposes between the MPCC Mark III and my Nikon Z7 mirrorless?

    Answer rated: 0
    The Nikon Z-cameras have got a back focus of 16mm.
    The Wide T-ring need 8,3mm, no matter if you use it with T-2 or with the additional S52 / M48 adapter #2958552

    The MPCC requires 55+/-1mm distance, when used with T-2 or the optional Baader M48 Spacer Ring for MPCC III / Protective EOS T-Ring
    # 2458405, or 57,5+/-1mm when used with the M48-thread, but without the adapter #2458405

    If you use either T-2 or M48 with the adapter #2458405, you need an additional 30.7mm-extension (+/-1mm) in T-2 or M48.
    For T-2-this can be done e.g. with
    2x Baader T-2 / 15 mm Extension Tube (T-2 part #25A) # 1508154
    1x Set: T-2 Fine-Adjustment rings (0,3 / 0,5 / 1 mm) - Aluminium # 2457910
    or
    1x Baader VariLock 46, lockable T-2 ExtensionTube 29-46mm with spanner tool (T-2 part #25V) # 2956946

    For M48, we do not have the spacer rings yet, but you could use
    2x M48 Fine-Adjustment ring 1mm (gold) - Aluminium #2457918
    1x Baader Hyperion Finetuning-Ring, 28 mm # 2958228

    If you use the MPCC without the optional adapter #2458405, you need a 33.2+/-1mm-extension - for this, we do not have a solution at the moment.

    For a fullframe camera, we'd recommend the M48-adaptation because of its larger clear aperture.
    Answer by: Baader Web Team (Admin) on Jan 20, 2021 10:09:00 AM
  5. Rated: 1
    1/17/2021 9:32 PM 2" MPCC Mark III (Multi-Purpose Coma Corrector for Newtons)
    Do you supply the MPCC Mk 111 without the recess in the barrel?
    This causes difficulties when used with clamps with a copper ring.
    No problems with a smooth barrel.

    Answer rated: 0
    We are sorry there is no other version available
    Answer by: Baader Web Team (Admin) on Jan 18, 2021 10:58:00 AM
  6. Rated: 0
    1/17/2021 6:05 AM Baader 31mm Hyperion Aspheric 2" Eyepiece
    Will the Hyperion 31mm eyepiece be useful with my dobsonian 16" f/4,5 reflector? How much edge of field distortion will there be?

    Answer rated: 0
    Of course you can use the Hyperion eyepieces with the telescope, but will show the coma which is typical for such a fast telescope (just like a camera would di, too). To get rid of the coma, we recommend combining your eyepieces with the 2" MPCC V-1 Mark III Newton Coma Correktor - SET: Visual and Photographic Version # 2458403 which can easily be combined with many eyepieces. This coma corrector neither changes the focal length nor the field of view.

    Please note that the 36mm eyepiece will result in an exit pupil of 8mm with your telescope, which is probably too much for your eyes (typically, the human pupil doesn't open much farther than 7mm even for young people and under darkest skies). The 31mm eyepiece should be more useful with an exit pupil of ca. 6.9mm.
    Answer by: Baader Web Team (Admin) on Jan 18, 2021 9:39:00 AM
  7. Rated: 0
    1/16/2021 12:14 PM Baader Multi-Purpose Vario Finder 10x60 (single or with MQR-IV finder holder)
    What is the outer diameter of the 10x60 Vario Finder optical tube?

    Answer rated: 0
    The diameter of the white tube is 63,3mm the knurled ring ist at 70mm and the dew shield has 74mm.
    Answer by: Baader Web Team (Admin) on Jan 19, 2021 10:22:00 AM
  8. Rated: 0
    1/15/2021 9:33 PM Baader 45 ° Maxbright Amici prism 1¼ "with built-in 2x glass path corrector
    guys this stuff is far to complicated to use. I need "YOU" to put together a usable package i can use. I have a stellarvue 80mm f6.9 with feathertouch 2in focouser. All i currently have is your Hyperion Mark IV 8-24mm Zoom Eyepiece, i need a borlow, and a prism diagonal and any other items to assemble everything together, i prefer to keep it as simple as possible. thanks for your help

    Answer rated: -1
    This prism is made especially for the old Maxbright bino-viewer, it is meant to be attached directly to the T-thread of the bino-viewer, mainly for terrestrial observations.

    If you do not use a binoviewer, we'd recommend either a mirror diagonal like
    Baader 2" BBHS ® Mirror Diagonal with 2" ClickLock Clamp # 2456115
    Baader 2" ClickLock Diagonal Mirror # 2956100
    Baader Zenith Prism Diagonal T-2/90 ° with 32mm Prism (T-2 part #14) # 2456005K (for binoviewers or if you only use 1.25" eyepieces)
    for astronomical observations or one of these amicis for terrestrial observations:
    Baader 2" Amici-erecting-prism 90° with 2" holder and 2" sleeve # 2956152 (also for high magnifications)
    Baader1¼" Amici-erecting-prism 45° with 24mm free aperture # 2956150 (only for terrestrial observations, only 1.25")

    You can find more about our star diagonals (and why we have so many) in this PDF:
    https://www.baader-planetarium.com/en/downloads/dl/file/id/1617/product/1687/baader_star_diagonals_t_2_and_2.pdf

    You may need a reducer from 2" to 1.25", as barlow-lenses are usually made for 1.25"-eyepieces, if you don't already have one:
    https://www.baader-planetarium.com/en/accessories/adapters-imaging-accessories/eyepiece-clamps.html?filter_adapters_type=244&filter_threads_lenssided=575

    We offer these Barlow lenses:
    https://www.baader-planetarium.com/en/accessories/optical-accessories/barlow-lenses-coma-and-glaspathcorrectors.html?filter_eyepiece_opticaldesign=321
    The Hyperion Barlow is meant to work best together with the Hyperion Zoom, Q-Barlow and VIP-barlow are good regular barlows, and both FFC and Abbe barlow are high-end. They can be inserted into a 1.25" clamp; only the FFC is a little bit more complicated as it was made also for large-format cameras.
    Answer by: Baader Web Team (Admin) on Jan 18, 2021 11:47:00 AM
  9. Rated: 0
    1/15/2021 8:42 PM Baader Q-Barlow 2.25x / 1.3x
    will this barlow work with Baader Hyperion Universal Zoom Mark IV, 8-24mm eyepiece (1¼" / 2")

    Answer rated: 0
    In its 2.25x-configuration, it works with all 1.25" eyepieces, including the Hyperion Zoom (when the 1.25" nosepiece is used).
    For 1.3x, it can only be used with eyepieces where no optics are inside of the 1.25" nosepiece, as the lens body has to be inserter into the nosepiece. So it can't be used in 1.3x-configuration with the Hyperion Zoom.
    Answer by: Baader Web Team (Admin) on Jan 18, 2021 9:50:00 AM
  10. Rated: 0
    1/14/2021 6:10 PM Baader FlipMirror II Star Diagonal
    I’m trying to build my optic train for a Nikon Z6 and an eyepiece on a Celestron 8” SCT (non EdgeHD). As I understand it, the back focus for the telescope is 127mm (5”). If I connect the OTA via the baader short adapter, what adapters do I need on both the camera train and the eyepiece train?

    Answer rated: 0
    Lets start with the camera:
    - Nikon Z6 - 16mm
    - Baader Wide-T-Ring Nikon Z (for Nikon Z bajonet) with D52i to T-2 and S52 # 2408335 (8.3mm)
    - optional Reducing piece S52 / M48 # 2958552 (zero length) (for a wider clear aperture; not necessary, if you use T-2 on the telescope side)

    The field stop of the eyepiece should be in the same distance from the FlipMirror as the camera sensor. That's ca. 24mm, if you attach the Wide-T-ring directly to the FlipMirror. Then you can use
    - Baader Focusing Eyepiece Holder 1¼" / T-2 (T-2 part #08A) # 2458125, 29-35mm for the eyepiece
    and
    - Baader T-2 / 7.5 mm Extension Tube (T-2 part #25C) for the camera # 1508155
    This gives you a working distance of 31,5mm for the camera and 29-35mm for the eyepiece. With this setup, you should reach focus with most eyepieces - usually, the field stop is at the transition between eyepiece body and 1.25" nosepiece, but it can vary. (We all know, that eyepieces are not parfocal...)

    The length of the setup is then:
    31,5mm for camera (and eyepiece)
    59mm for Baader FlipMirror II Star Diagonal # 2458055 when used with T-2
    15mm for Baader T Adapter (BTA) for SC and MAK Telescopes (T-2 part #21) T-2 Part #: 21 # 2408160
    => 105,5 mm

    Optimum back focus is 127mm, so you need an additional 21.5mm extension, e.g.
    Baader VariLock 29, lockable T-2 ExtensionTube 20-29mm with spanner tool (T-2 part #25Y) # 2956929,
    if you want to be precise. (a 20mm extension should work good enough, and there is always Set: T-2 Fine-Adjustment rings (0,3 / 0,5 / 1 mm) - Aluminium #2457910) If you want to use the Off Axis Guider, you should place one 211mm-extension in front of the camera and one in front of the eyepiece holder, this will give you more back focus fur the guiding camera. If you don't use the off-axis-port, you can save money and put the extension between flip mirror and telescope. Fortunately, a Schmidt-Cassegrain is a userfriendly telescope, so that you don't have to keep to distance to a tenth of a millimeter.
    Answer by: Baader Web Team (Admin) on Jan 18, 2021 1:43:00 PM
  11. Rated: 0
    1/14/2021 5:17 PM Universal Alan Gee II - Telecompressor (UAG II)
    I have a C8SE with 2" TV Everbrite Dielectric and I use the original maxbright with 2 x 17.5 Morpheus. Can you please tell me how the the UAG-II would improve my setup. What difference would I see, if any?
    I also read about the ideal distance of "121mm", by using the bino + 2" TV diagonal, what is my distance?
    Also can the UAG-II be used in conjunction with the GPC 1.7?
    Thanks for your help, I am trying to learn!

    Answer rated: 0
    The UAG II is designed for use in directly in front of the Maxbright II bino. It won´t fit well onto the old Maxbright, sorry to say. Also any 2" diagonal is not suitable in this configutation. It would be necessary to take the shortest attainable optical path - and this is the T-2 Prism diagonal.

    Sorry - we do not think it makes much sense when trying to put a 2" diagonal into the beam - most likely you won´t reach focus.

    The 112mm are equal to the light path of the bino-viewer, so that the UAG must be placed very close to the body to work. Also, the focal length of a Schmidt-Cassegrain changes, if you move the focus farther away from the telescope, so that the reducing factor changes - if you can reach focus at all.

    You can not combine the Alan Gee with a glasspath corrector - this is one of the combinations where you do not reach focus at all with a Schmidt-Cassegrai - and you would combine an element to reduce the focal length with one to extend the focal length. You are better off if you use the Alan Gee for low magnifications and a glasspath corrector for higher magnifications.
    Answer by: Baader Web Team (Admin) on Jan 18, 2021 11:11:00 AM
  12. Rated: 1
    1/14/2021 12:50 PM Network Cable (red) with ColdTemp-specified CAT-7 wire – available in 3, 5, 15, 30 Meter
    What is the cable material?
    What is the temperature limit in a moving assembly?
    I have made a short PUR cable through the mount.
    I am using the cold temperature option of the 10Micro GM-3000 HPS.

    Answer rated: 1
    It is also PUR Material, It works down to the specification of the Low Temp Upgrade of the GM3000 HPS mount.
    Answer by: Baader Web Team (Admin) on Jan 15, 2021 2:42:00 PM
  13. Rated: 1
    1/12/2021 4:21 PM Baader MaxBright® II Binoviewer with case
    I am considering buying the Maxbright ll (mainly because of the clicklock) and was wondering how much difference optically I will see in comparison with original Maxbright that I own. I use them on a Celestron 8SE with TV 2" everbrite dielectric diagonal. Thanks!

    Answer rated: -2
    The main difference which you will notice will be at low magnifications: You can use eyepieces wih 32mm without notable vignetting by the larger prisms. In this regard, it is much closer to our Mark V giant binoviewer than to the smaller binoviewers. Especially with the Universal Alan Gee II - Telecompressor (UAG II) # 2454405, you can get larger field of views han with the old MaxBright or similar binoviewers.

    At high magnifications with a smaller field of view, there isn't too much of a difference, except perhaps a little bit in direct comparison because of the coating.
    Answer by: Baader Web Team (Admin) on Jan 14, 2021 9:28:00 AM
  14. Rated: -1
    1/10/2021 7:09 AM 2" BDS-SC Baader Diamond Steeltrack® Focuser
    will this fit on a GSO RC8?

    Thanks

    Matt

    Answer rated: -1
    The SteelTrack SC focuser comes with 2" and 3.3" SC-threads; as far as we can see (please check your teelscope's manual) the RC has got an M90x1-thread.

    For the RT-version (for refractors), we do have RT-Adapter M90x1 Diamond Steeltrack® (Skywatcher) # 2957283, but it does not fit on the SC-focuser.

    The SC-focuser has got a length of 93mm plus 30mm of travel;
    the RT-focuser has got a minimum length of 78mm plus 80mm of travel.

    So, you can probably use the RT-version # 2957210 with the M90-adapter instead of the SC-version.
    Answer by: Baader Web Team (Admin) on Jan 11, 2021 1:28:00 PM
  15. Rated: 0
    1/9/2021 3:25 AM Baader1¼" Amici-erecting-prism 45° with 24mm free aperture
    I'm sorry i forgot to included in my previous statement , i was using this setup for primarily terrestrial viewing if it makes any different at all

    Answer rated: -1
    For terrestrial observations, you probably won't need the Barlow lens, as the Hyperion Zoom gives you up to 70x, which is in the range of the highest magnifications which are usually permitted by the turbulences in our atmosphere. The higher magnifications of the Barlow can only be used on days with steady, clear air (this is less of a problem when looking into the stars instead of through the thick layers of turbulent air close to the Earth's surface).
    Answer by: Baader Web Team (Admin) on Jan 11, 2021 1:40:00 PM
  16. Rated: 0
    1/9/2021 2:43 AM Baader1¼" Amici-erecting-prism 45° with 24mm free aperture
    I am working with a SV-80mm f/6.9 scope, i already purchased your mark iv 8-24mm zoom eyepiece. My question is will this diagonal, and your Hyperion® Zoom Barlow Lens set up work with my scope and or will i need any additional accessories for it thanks again for helping out.

    Answer rated: 0
    If the telescope has got a standard 1.25" eyepiece clamp (the Hyperion eyepiece should fit into it in 1.25" configuration) and if it hasn't got an extremely uncommon back focus, then this combination will work.
    Answer by: Baader Web Team (Admin) on Jan 11, 2021 1:37:00 PM
  17. Rated: 1
    1/8/2021 11:10 PM Glasspathcorrector 1:1,70 for Baader-Binoviewer with T-2 thread (MaxBright II® and MaxBright®)
    I am using the original Maxbright with a pair of 17.5 Morpheus and a 2" Everbrite Dielectric diagonal on a Celestron 8SE.
    Can you please tell me what is the exact magnification I will get when using the 1.7 GPC. Thank you

    Answer rated: 0

    Focal length of your telescope is 2000mm x 1,7 (Glaspath corrector) : 17,5mm (Focal length of your eyepiece) = roughly 194 x magnification


    Answer by: Baader Web Team (Admin) on Jan 9, 2021 5:18:00 PM
  18. Rated: 1
    1/8/2021 10:07 PM Baader FlipMirror II Star Diagonal
    I have a Vixen VMC-200L, Vixen 50mm 2" ocular (with Baader skyglow filter), a ZWO ASI183MC camera, and a ZWO ASI120MC-S camera. Along with the Baader Flip Mirror Diagonal, what components do I need to mount the ocular on the top port, the ASI183 camera on the axial port, and the ASI120 camera as an off-axis guider?

    Answer rated: -2
    This depends on the field stop position of the eyepiece and the backfocus of the cameras.
    For the eyepiece on the upper port, we'd recommend
    #2956242 M42i x 0,75-ClickLock (Astro T-2 System) with a height of 36,6mm.
    Please note that the upper port is limited by the diameter of the T-2-thread, so it is a little bit less than 40mm, and there will be some vignetting with 2"-eyepieces with long focal lengths.
    For the camera, you can use e.g.
    #2956220 SC / HD (2")-Clicklock (5" SC, 6" SC/HD, 8" SC/HD and 9¼" SC)
    with a height of 47mm.
    If I understand the description of ZWO correctly, the larger camera has 6mm of backfocus when used with either T-2 or a 2" nosepiece; the smaller camera should be similar and also include a 2" nosepiece (if doesn't, but has got a female T-thread, you can use Baader 2" nosepiece to T-2 / M48 # 2408150; if it has got only a 1.25" nosepiece, there is Baader Pushfix Reducer 2" to 1¼" # 2408151 with only 1mm of optical height).

    We'd recommend to use these two clamps and to determine the focus position of the eyepiece. You shouldn't need to insert it completely into upper port, as that clamp is shorter. If desired, you can add T-2-extensions later to get to the right distance. Or you focus your telescope now with the cameras to find out how much the focus differs between eyepiece and cameras, then you can determine the required T-2-extensions in advance.

    For connection to the telescope, we'd need to know the available thread at the telescope. T-2 or M48 work out of the box, for other threads, an adapter would be required.

    For further information, please also take a look at this blog post: https://www.baader-planetarium.com/en/blog/using-the-flipmirror-the-correct-working-distances/
    Answer by: Baader Web Team (Admin) on Jan 11, 2021 3:54:00 PM
  19. Rated: 0
    1/8/2021 9:27 PM Baader M48 Spacer Ring for MPCC III / Protective EOS T-Ring
    Would this spacer (# 2458405) create the correct spacing for coupling a Baader MPCC III to an M48 t-ring? The M48 t-ring I own happens to be from Williams Optics, but measures the usual 11mm thick. I notice that when I thread the MPCC directly into this M48 t-ring, coma correction is not a good as when I use the M42 adapter on the MPCC and couple that to a standard M42 t-ring. Am I correct in assuming that this spacer increases the spacing for the M48 system to the correct 55mm? Thanks in advance.

    Answer rated: 0
    Yes, this ring gives you the standard working distance of 55mm for M48-thread, too, just as with the T-2-thread.
    If you think you might need to increase the deistance slightly, there is also our set of M48 Fine-Adjustment rings (0,3 / 0,5 / 1 mm) - Aluminium
    2457915 avaliable.
    Answer by: Baader Web Team (Admin) on Jan 11, 2021 1:07:00 PM
  20. Rated: 1
    1/8/2021 3:35 PM Baader 2" ClickLock eyepiece clamps (from T-2 to 4,1")
    Do I attach the Baader Click-Lock SCT adapter (2") to my scope by just screwing it on firmly, or should I also tighten the six grub screws?

    Answer rated: 0
    Simply screw it on the OTA. It should hold without tightening on the screws
    Answer by: Baader Web Team (Admin) on Jan 10, 2021 12:16:00 PM
  21. Rated: 1
    1/7/2021 12:13 AM Baader 2" Cool-Ceramic Safety Herschel Prism (Visual / Photographic)
    Is the Herschel wedge compatible with 1.25-inch eyepieces?

    Answer rated: -1
    Yes, you just need a standard reducer from 2" to 1.25" like Baader 2" to 1¼" ClickLock Reducer (T-2 part #15B) # 2956214, Baader Reducer 2"/ 1 ¼" (T-2 part #15) # 2408190 or 2" / 1¼" Economy-Reducer with 2" filter holder # 2408153
    Answer by: Baader Web Team (Admin) on Jan 7, 2021 11:04:00 AM
  22. Rated: 0
    1/5/2021 3:55 PM Alan Gee Telecompressor Mark II (T-2 part #20)
    Will this work with a Celestron C11 with the Baader 2” click lock visual back?

    Answer rated: 0
    There are several ways of adapting the Alan Gee to a telescope described in the manual at https://www.baader-planetarium.com/en/downloads/dl/file/id/213/product/1197/baader_alan_gee_ii_telecompresor_shapley_lens_f_5_9_manual_and_applications.pdf

    You could e.g. use Baader T Adapter (BTA) for SC and MAK Telescopes (T-2 part #21) # 2408160 and Baader Expansion Ring 2"a/T-2i with 1mm optical path length (T-2 part #28) # 2958242.

    But please remember two things: The compressing factor of the Alan Gee depends on the distance to camera or eyepiece, and it is designed to be used inside of the baffle of a Schmidt-Cassegrain, only then it will deliver the best results (which is mainly important for photography). If you want to use it with a 2" star diagonal, we recommnd that you use it as described in the manual between the nosepiece and the body of the star diagonal. If you want to proceed with T-2, we recommend the Universal Alan Gee II - Telecompressor (UAG II) # 2454405 which combines the Alan Gee optics with a 2" nose piece and a T-thread.
    Answer by: Baader Web Team (Admin) on Jan 7, 2021 9:18:00 AM
  23. Rated: 0
    1/4/2021 1:44 PM 2"a / M44i x 1 Zero-length reducing piece (zero optical length)
    I'm trying to figure out if this could work with a leica APO 82 televid (there is a male thread when y=the original eyepiece is removed, I mesure 44mm as outer diametre.
    My goal is to use the televid close to its native focal length with a camera.
    Any help appreciated

    Answer rated: 0
    The ring does indeed fit the M44 male thread of the Leica Televid. But then, as a result, there is a 2" ("Celestron") thread with 24 turns/inch (pitch) on the Televid. Whether you could connect a camera to it and come into focus is not so easy to say. Surely our ultra-short SC-T adapter can be attached - and then 16mm above the Televid body sits a T-2 thread (M42x0.75 mm). But it is rather unlikely that such a focused image can be created in the camera.

    The Leica eyepieces have a pre-mounted Barlow lens, which protrudes so far into the eyepiece socket of the Televid that the first eyepiece lens almost rests on the prism. Only then you can reach the focal point with the eyepiece at infinity setting. Our "Zero-Length" M44 ring is actually intended to be screwed into our Hyperion Zoom Mark IV instead of the 1 1/4" socket so that our zoom can be used on the Televid instead of a Leica eyepiece - because only in this way can our eyepiece with its front lenses reach as far into the Televid as the LEICA eyepieces.

    With a camera, however, these lenses are missing, the image will not be able to be focused. You may be able to test if you can get into focus by bringing your intended camera to the televid at a distance of 16 mm and see if the image comes into focus, not just at 3M distanceuing but at infinity setting.

    CONCLUSION: in our opinion, unfortunately, a camera connection without focal length-extending intermediate optics is impossible. Unfortunately, we do not offer and don´t know a source for such intermediate optics that would be suitable for this purpose.

    Answer by: Baader Web Team (Admin) on Jan 8, 2021 10:04:00 AM
  24. Rated: 1
    1/3/2021 5:36 PM Baader Wide-T-Ring Nikon with D52i to T-2 and S52
    I have a Hyperion 13mm lens and I would like to mount a Nikon D3200 Camera with a Tring mount. Can I do that?

    Answer rated: 0
    Just see our PDF according digiscopy at page 4. In short the extender ring should be in length the diagonal of the sensor:
    https://www.baader-planetarium.com/en/downloads/dl/file/id/444/product/1211/digiscoping_camera_adaptations_for_afocal_photography_and_eyepiece_projection.pdf
    Answer by: Baader Web Team (Admin) on Jan 4, 2021 12:40:00 PM
  25. Rated: 0
    12/28/2020 9:19 AM Baader f/2 Highspeed-Filterset H-alpha / OIII / SII
    Can I use your F/2 filters with slower telescopes, say F/6.7 without loss of performance?

    Answer rated: 0
    No. You can use them at slower f/ratios, but they will not be as good as filter which is designed for such f/ratios - just the same as a regular filter will not handle faster f/ratios without performance losses.
    Answer by: Baader Web Team (Admin) on Dec 29, 2020 10:29:00 AM
  26. Rated: 3
    12/28/2020 3:35 AM Carl Zeiss 1¼" Abbe Barlow lens 2x
    To get this Balow to 3x, which Varilock should I buy? The Varilock 29 or the Varilock 46? Thanks a lot.

    Answer rated: -1
    You need an additional 70mm between the eyepiece clamp and the Barow.
    For an eyepiece, this can be done with a 40mm tube and two 15 mm tubes.
    For photography, you need to know the back focus/flange focal distance of your camera (55mm for a camera with T-2-adapter, or anything down to ca. 6mm for CCD-cameras.
    For a video module/planetary camera, where the sensor is close to the 1.25" nose piece (and thus similar to an eyepiece), we'd recommend the 40mm T-2-extension # 1508153 and the 20-29mm VariLock # 2956929
    Answer by: Baader Web Team (Admin) on Dec 29, 2020 1:34:00 PM
  27. Rated: 3
    12/26/2020 6:36 AM Baader MaxBright® II Binoviewer with case
    First Merry Christmas!
    I wonder if someone can help me. I have the original Binoviewers Maxbright and I want to change the screws (6) that hold the eyepieces with "knurdle" kind, easier to change eyepieces. Can you please tell me the size, someone said they are M4. But not sure. Are they metric? Coarse thread, etc.
    Really appreciated, I have many of your products and very happy with them.
    Thanks again.

    Answer rated: -1
    Hello,

    the first version has had M4x0.7metric. The following versions have M3x0.5 metric.

    Best regards

    Baader Web Team
    Answer by: Baader Web Team (Admin) on Jan 11, 2021 9:27:00 AM
  28. Rated: 2
    12/25/2020 3:45 PM Fluorite Flatfield Converter (FFC) / 3x-8x
    With a classical Cassegrain such as Orion CC 6 inch Dia 1800 mm focal f12 and focal plane fixed at 6 inch from rear mirror approx would this FFC be practical at all ?

    Answer rated: -1
    You can find a diagram in the gallery of the product images which shows you the position of the FFC and the new focal plane in relation to the original focal point of the telescope. E.g., if you use it at 3x, the FFC moves 14,7mm inwards (that's the value of L), and you need extension tubes for 96mm (that's the value of L').
    For 8x, you need ca. 27mm of inward travel.
    This should help you to determine if you have enough back focus.
    On the other hand, you should check the pixel size of your camera to see if you are oversampling when using the telescope at at least f/36. Today, some cameras have such small pixels that they already work fine at f/15-f/20. The perfect focal ratio depends on the camera pixels. There are several articles online about this, just google e.g. "matching your camera to your optics" for a lot of information.
    Answer by: Baader Web Team (Admin) on Jan 8, 2021 9:42:00 AM
  29. Rated: 0
    12/24/2020 8:13 AM Alan Gee Telecompressor Mark II (T-2 part #20)
    I Wish to attach your Alan Gee Telecompressor to an older Meade 16” LX200, F/10, so I can attach a spectrograph that operates at F/5. What additional adapters do I also need to purchase?

    Thank you,
    Ron DiIulio, Director
    Astronomy Program
    University of North Texas, USA

    Answer rated: 0
    We do not know the baffle diameter of your telescope, so if you have a 2" eyepiece holder, it's probably the best if you use Universal Alan Gee II - Telecompressor (UAG II) # 2454405. That's the same optic set, but inside of a 2" body and with T-2-threads on both sides. It is not at the perfect position, but should be close enough.
    The compressing factor depends on the distance to your camera/spetrograph, more information on calculating this factor can be found in the manual in the download section.
    Answer by: Baader Web Team (Admin) on Dec 29, 2020 12:42:00 PM
  30. Rated: 0
    12/24/2020 6:37 AM Bundle: Hyperion Universal Zoom Mark IV with Hyperion-Barlow 2.25x (8-24mm / 3.6-10.7mm)
    Is there a lunar filter that you recommend for use with this model, both with and without the Barlow attached? I'm assuming 1.25" but I've not been able to confirm elsewhere. Thanks!

    Answer rated: 0
    A 1.25" filter is fine and can be used with both the Barlow and only the Zoom eyepiece.
    If you use a 2" star diagonal, you can also use a 2" filter and mount it into the star diagonal or - if you use one - the reducer to 1.25".
    Answer by: Baader Web Team (Admin) on Dec 29, 2020 12:39:00 PM
  31. Rated: 1
    12/23/2020 2:37 PM Baader 2" ClickLock eyepiece clamps (from T-2 to 4,1")
    I have a Celestron Nexstar Nevolution 9.25. What click lock works with it?

    Answer rated: 0
    You need #2956220 SC / HD (2")-Clicklock (5" SC, 6" SC/HD, 8" SC/HD and 9¼" SC) for a regular Schmidt-Cassegrain.
    Answer by: Baader Web Team (Admin) on Dec 29, 2020 10:49:00 AM
  32. Rated: 0
    12/21/2020 9:30 PM Glasspathcorrector 1:1,70 for Baader-Binoviewer with T-2 thread (MaxBright II® and MaxBright®)
    I have a SCT 8". If I use the 1.7 GPC, will it do the same as using a barlow (magnify)? Or I am not understanding how it works.
    If it does magnify what is the difference result using one or the other? Thanks!

    Answer rated: 0
    A glaspath corrector is not a normal barlow. It extends the focal length like a barlow but corrects the color fringing that happens when the light goes through the prisms of an binocular. Means when you use the Glaspath corrector without an binocular, you will have an overcorrection and this will lead to colour fringe around stars. We have different glaspath correctors with different extension factors because the higher the extension factor the further out is the focal point. You can choose between x1,25 wich gives only slightly higher magnification but does not extend the focal point very far out. The x2,6 version has a very high magnification and places the focal point very far out so that even with short Newtonian telescopes it becomes possible to reach focus with an binocular.
    Answer by: Baader Web Team (Admin) on Dec 22, 2020 8:43:00 AM
  33. Rated: 0
    12/19/2020 11:36 PM Baader 31mm Hyperion Aspheric 2" Eyepiece
    Can I attach the 2.25 barlow to this eyepiece?
    I have T-2 Adapter #2956180B, Adapter #2956180A and Hyperion Zoom Barlow 2.25x.
    What exactly do I need to attach? Do I need an extra attachment?
    Thanks!

    Answer rated: -1
    You can simply screw the adapter A which is included with the Hyperion Barlow onto the Barlow lens, then you can attach the Barlow to every 1.25" filter thread including the one of the Hyperion Aspherics.
    A conical 1.25"-adapter is included with the Hyperion Aspheric eyepieces, it replaced the 2" nosepiece and is made mainly for use with binoviewers - the field of view is reduced, as it is limited by the 1.25" diameter of the eyepiece holder, but it lets you use 1.25" filters and barlows, too.
    So you don't need any extra items.

    You could also use the T-2-adaper B which is included with the Barlow lens and buy Baader Expanding Ring T-2f / M48m (T-2 part #29) # 2458110 to screw it into the 2" filter thread of any 2" eyepiece.
    Answer by: Baader Web Team (Admin) on Dec 21, 2020 11:31:00 AM
  34. Rated: 3
    12/18/2020 9:46 PM Baader MaxBright® II Binoviewer with case
    Does it make sense to use 2-31mm Hyperion 72 with Hyperion zoom barlow 2.25 at the end of bino? What will be magnification and FOV?
    Thanks

    Answer rated: 0
    The Hyperion Aspheric can be used with a binoviewer and work fine, the 36mm shows 50° fov and the 31mm even 55°.
    But placing a barlow lens in front of the binoviewer will highly increase the magnification facor, as the binoviewer has got an optical length of ca. 110mm, plus the length of the T-adapter of the barlow lens.
    You can find some information about calcutaing the magnification depending on the distance between eyepiece and barlow lens in this PDF:
    https://www.baader-planetarium.com/en/downloads/dl/file/id/240/product/1062/calculating_different_magnifications_with_the_vip_barlow.pdf
    Please excuse me if I don't do the math, but the resulting magnification factor should be somewhere between 3x and 4x. So, it may work, but the magnification may be too high.
    Please also note that our glasspath correctors are similar to barlow lenses, but not identical. If you already have the Hyperion Barlow, you can just try it out; otherwise we'd recommend the purchase of a glasspath corrector, which also works better against chromatic aberrations which are introduced by the prisms when you use a fast telescope.
    Answer by: Baader Web Team (Admin) on Dec 21, 2020 10:52:00 AM
  35. Rated: 0
    12/18/2020 12:56 PM SolarSpectrum Research Grade 0.4x Telecompressor 2"
    Can this reducer be used the the TZ-4 telescentric?

    Answer rated: 1
    Yes, this reducer can be used in combination with TZ-4. But please note, there is often a misunderstanding about what this reducer is capable of. The reducer makes the image smaller so that it fits on a small CCD or CMOS sensor. But the reducer will not enable you to see a larger field on the sun.
    Answer by: Baader Web Team (Admin) on Dec 18, 2020 2:31:00 PM
  36. Rated: 6
    12/17/2020 10:45 AM sCMOS range: Balor, Marana, Zyla and Neo cameras for Physics & Astronomy
    Have they updated their cameras to be compatible with already existing software or are they still requiring you to use their proprietary software?

    Answer rated: -3
    Information on the required software can be found on the spec sheets of the cameras. There you can see that Andor offers

    i) Andor SOLIS for imaging (our own software for data acquisition and processing)

    ii) Andor SDK and Andor SDK3 – which is a software development kit that allows you to control the Andor camera from your own application. Available as 64-bit libraries for Windows (8, 8.1 and 10) and Linux. Compatible with C/C++, LabView and Matlab (Python also possible).

    Andor also offer drivers to use the camera with third party software like MaximDL. They are currently updating our “Third party software support” website.
    Answer by: Baader Web Team (Admin) on Dec 17, 2020 10:48:00 AM
  37. Rated: 0
    12/17/2020 4:14 AM Mark V Großfeld (Giant)-Binocular
    Is it possible to replace the old 3 screws in the original Maxbright binoviewers with the clicklock system? How much?

    Answer rated: 1
    You've written your question on the Mark V Binoviewer product page but in the text ask about the Maxbright Binoviewer.
    - If you're question was correct but placement was wrong then our answer unfortunately is no. It is not possible to exchange to standard eyepiece clamps to ClickLock clamps on the Maxbright Binoviewer.
    - If you're actually asking about the Mark V then the answer is yes, older models can be exchanged to ClickLocks. However this needs to be done by us in house and requires some time so it is not cheap. If you're interested, please send us an email
    Answer by: Baader Web Team (Admin) on Dec 17, 2020 2:49:00 PM
  38. Rated: 1
    12/17/2020 1:19 AM QHY268 BSI Cooled Medium Size APS-C Camera
    What is the expected availability date for the QHY268M-PH model?

    Answer rated: -2
    This may be early next year
    Answer by: Baader Web Team (Admin) on Dec 21, 2020 10:22:00 AM
  39. Rated: 1
    12/16/2020 7:39 PM Baader MaxBright® II Binoviewer with case
    What are the maximum angle eyepieces you can use with these binoviewers? Would I get the full benefit of using 82° eyepieces or would I need something narrower?
    Also, have you any idea when they will be available for sale again?

    Answer rated: 2
    For practical use, there are no limitations. We tried a 36mm eyepiece which shows the whole field of view which fits into a 1.25" sleeve and didn't notice any obvious vignetting.
    Wide-angle eyepieces are available only in shorter focal lengths, otherwise they would show the inner walls of their own 1.25" sleeve - they can't show a larger portion of the sky than the 36mm-eyepiece mentioned above, they only magnify it higher.
    So, there are no practical limitations, all 1.25" eyepieces work.
    You may notice some vignetting when taking photos through an eyepiece, but with the eye, there is no problem.

    We can't give a specific date when the binoviewer will be available again - tis depends on production and quality control, and due to the distortions caused by Corona, things have become pretty much unpredictable.
    Answer by: Baader Web Team (Admin) on Dec 17, 2020 9:46:00 AM
  40. Rated: -1
    12/14/2020 2:46 AM Baader 2" ClickLock M54a x 0.75 clamp (TS-Optics / SkyWatcher)
    This will fit in a Celestron StarBright XLT 9.25 OTA?
    Thanks!

    Answer rated: 0
    No, for the C925 Schmidt-Cassegrain, you need
    #2956220 SC / HD (2")-Clicklock (5" SC, 6" SC/HD, 8" SC/HD and 9¼" SC)
    For the C925 EdgeHD, you need
    #2956233 SCL (3,3")-ClickLock (9¼" HD, 11" SC/HD and 14" SC/HD)
    Answer by: Baader Web Team (Admin) on Dec 14, 2020 9:41:00 AM
  41. Rated: 1
    12/12/2020 2:23 PM 2" Glasspathcorrector® 1,7x for Newtons incl. T-2 change ring
    Hello. I'd like to use this corrector with William Optics binocular. I need some additional T2 connector between the corrector and bino. Is there a way to make it work?

    Greetings


    Answer rated: 0
    We are sorry but we do not have adapters for William Optics bino-viewers and dont know their design good enough. If it has got a 2" filter thread, maybe you can use Baader Expanding Ring T-2f / M48m (T-2 part #29) # 2458110 - but this will bring the glasspath corrector much farther away from the bino than desired, thus increasing the magnification even further.
    Answer by: Baader Web Team (Admin) on Dec 14, 2020 9:30:00 AM
  42. Rated: 2
    12/11/2020 10:11 PM 2" BDS-SC Baader Diamond Steeltrack® Focuser
    Buenas noches
    El Enfocador Diamond Steeltrack® Baader BDS-SC de 2 ", es compatible con un Mac de 180 y un steeldrive II
    Saludos
    Jorge

    Answer rated: 0
    Diamond SteelTrack focusers and SteelDrive II focus motors are compatible.
    If you Mak has got an 2" SC-thread (outer diameter 50,2mm), the SteelTrack should fit, it is an 2" 24 thread (60°) - you can find out about measuring a thread here:
    https://www.baader-planetarium.com/en/blog/clicklock-clamp-for-your-telescope/
    Answer by: Baader Web Team (Admin) on Dec 14, 2020 12:56:00 PM
  43. Rated: 0
    12/11/2020 10:19 AM Flat base plate (96x96mm) for BDS-NT
    Which is the thickness of the flat base plate, and how is it mounted on to the NT Diamond Steeltrack?


    Answer rated: 1
    The thickness of the plate is 5mm. Please refer the manual to see how the plate gets mounted. Its the same way like the versa base gets
    mounted: https://www.baader-planetarium.com/en/downloads/dl/file/id/30/product/2859/bds_nt_dimensions_technical_drawing.pdf
    https://www.baader-planetarium.com/en/downloads/dl/file/id/31/product/2859/bds_nt_versabase_dimensions_technical_drawing.pdf
    Just fasten the 8 dovetail screws around it.

    Answer by: Baader Web Team (Admin) on Dec 21, 2020 10:57:00 AM
  44. Rated: 1
    12/8/2020 9:10 PM Baader 2" ClickLock eyepiece clamps (from T-2 to 4,1")
    Hi, I have a binoculars 20x80 skymaster pro
    The eyepiece is 40mm, can i use the 90 dgree eyepiece with it so I can easily look up!
    Or any other product can serve this purpose?

    Answer rated: 1
    Unfortunately there is no possibility to add an 90 degree prism to an normal binocular like Celestron Skymaster. The reason is simply that there is not enough focus travel in the binocular mechanic wich is designed to be as small as possible to be easily carried. Therefore even if you would mechanically adapt an prism, you cannot reach focus, the image would not be sharp. For this reason there is also no mechanical adaption available. There are astronomical binoculars available were you can exchange eyepieces from brands like Vixen, but these are big and heavy, cannot be hold in the hand, need tripods - and are way more expensive than a Celestron Skymaster.
    Answer by: Baader Web Team (Admin) on Dec 9, 2020 9:20:00 AM
  45. Rated: 2
    12/8/2020 4:01 PM Baader Sky Surfer V (Night & Day Design) Red-Dot-Finder
    How do I mount the SkySurfer V close to the tube of a Celestron CPC800? I see photos of this configuration (i.e., without the stalk between the finder and the base). What hardware is required for this?

    Answer rated: 0
    There is no additonal hardware required, everything you need is supplied with the Skysurfer. Please look in the manual: https://www.baader-planetarium.com/en/downloads/dl/file/id/1427/product/4069/skysurfer_v_giant_red_dot_finder.pdf
    Answer by: Baader Web Team (Admin) on Dec 9, 2020 9:27:00 AM
  46. Rated: 1
    12/8/2020 2:18 PM StarAid Revolution Standalone Autoguiding - Revision A
    Some compact/portable mounts, such as the iOptron Skyguider Pro, only guide on the RA axis and not on the DEC axis. If I wanted to use the Staraid also with this mount, could I turn DEC guiding off in the built-in web app? I would like to turn DEC guiding back on at a later time to also use it with a normal GOTO EQ mount.

    Answer rated: 0
    StarAid was tested successfully with SkyWatchers Staradventurer, which can only be guided in RA, so RA-only-guiding is no problem.

    The app is basically a web interface and stores the info in the StarAid module, so you can change settings from every device.
    Answer by: Baader Web Team (Admin) on Dec 9, 2020 12:21:00 PM
  47. Rated: 0
    12/5/2020 10:25 PM Baader FlipMirror II Star Diagonal
    I have a Celestron C8 with f6.3 Focal Reducer [FR]. This gives a required backfocus of ~ 105mm from the rear of the FR to the imaging camera sensor. I'm using the BFM-OAG with a ZWO-mini as guide camera, but cannot get the guide camera backfocus to 105mm from the rear of the FR. Is this possible please?

    Answer rated: 1
    There is a black extension tube in front of the ZWO mini. If you remove it, you should be able to insert the camera deep enough into the Off-Axis-Guider to reach focus. Otherwise, you'd have to use T-2 extension tubes to place camera and eyepiece farther away from the FlipMirror (and the reducer...).

    But removing the 1.25"-extension from the ZWO mini should be sufficient. If you then need a shorter 1.25"-extension so that the camera fits better into the Off-Axis-Guider, you can use Baader 1¼" - 31.8mm nosepiece extension with 1¼" filter thread on both sides # 1905130 or an empty 1.25" filter cell as extension (Filter cell 1¼" classic (8mm height) # 2459251 or Filter cell 1¼" Low Profile (6mm height) # 2459251L
    Answer by: Baader Web Team (Admin) on Dec 7, 2020 10:45:00 AM
  48. Rated: 0
    12/5/2020 6:48 PM Baader Classic W Rubber Eyecap with folding wing
    I've recently bought zoom eyepieces baader 8/24 for my bino but i can't put in place the eyecup, could you help me please?
    Thanks.

    Answer rated: 0
    For the Hyperion Zoom, you need Baader winged rubber-eyecup 43/44 (Zoom-version) # 2454654, shich is also included with the eyepiece.
    You need to unscrew the 2" wide pre-installed eyecup (either clockwise or counter-clockwise, just try it), then you can access the M43-thread.
    Answer by: Baader Web Team (Admin) on Dec 7, 2020 10:55:00 AM
  49. Rated: 1
    12/5/2020 3:41 AM StarAid Revolution Standalone Autoguiding - Revision A
    Do you know yet if it works with 10Micron mounts?

    Answer rated: 0
    All mounts with an ST-4 compatible guide port and adjustable screws or knobs are supported (even single-axis tracking platforms). 10micron mounts are ST-4 compatible as are most other EQ mounts from Celestron, Skywatcher, Losmandy, AstroPhysics, SoftwareBisque, ASA. a.s.o.
    Answer by: Baader Web Team (Admin) on Dec 7, 2020 8:52:00 AM
  50. Rated: 0
    12/2/2020 9:05 AM Baader Hyperion 68° Eyepiece Set (Starter)
    Does these eyepieces working good on a fast telescope? Like f4.4 or not?

    Answer rated: 0
    With such a fast telescope, you should always use a coma corrector like the MPCC #2458403: Visual Version (V-1 Set), then they work fine.
    The eyepieces do not correct coma and would show the coma produced by the teelscope.
    Answer by: Baader Web Team (Admin) on Dec 2, 2020 9:50:00 AM
  51. Rated: 1
    12/1/2020 7:10 PM Baader Standard Base - for MQR III&IV, for Witty One & for V-Bracket
    Hello,
    I've bought the "Baader Standard Finder Base" for mount in a new BDS-RT. What type of M5 screws must I use for it? What is the aproppiate lenght for the M5 screw?
    Thanks.

    Answer rated: 0
    The screw would be a M5x13 with a 3mm cylindric head.
    Answer by: Baader Web Team (Admin) on Dec 2, 2020 8:56:00 AM
  52. Rated: 2
    12/1/2020 3:52 AM Research Grade TZ-3 Telecentric System (3x focal length)
    Which side goes into the telescope and which goes into the solar filter? I assume the side with the small lens needs to face the telescope, and the side with the large lens should face the H-alpha filter / camera. Is that right? I find that counter-intuitive, because the cone of light should be wider on the telescope side, is that not so?

    Answer rated: 1
    Its very easy: There is the name of the item written on it. When you are behind the telescope, were the camera/eyepiece is, you must be able to read the text (text is not upside down) Means the big lens points to the filter/camera/eyepiece, the smaller one to the telescope
    Answer by: Baader Web Team (Admin) on Dec 1, 2020 2:37:00 PM
  53. Rated: 0
    11/30/2020 6:23 PM Baader Hyperion Universal Zoom Mark IV, 8-24mm eyepiece (1¼" / 2")
    I have a Celestron Regal 100 ED spotting scope. If I upgrade the supplied zoom eyepiece to the Hyperion can I expect any improvement in the clarity of the image. I find the focus a little 'soft' above 50x.

    Answer rated: 0
    Maybe... The Hyperion Zoom is designed to work at high magnifications at the telescope. But the eyepiece which is included with the Regal spotting scopes usually isn't that bad, either, and the prisms inside most spotting scopes are designed to work for terrestrial magnifications, as they are seldom used at higher powers than 60-80x.
    So, we can only guess if the weak point in the chain is the eyepiece or the spotting scope. The image will not get worse by using the Hyperion Zoom, but we can't guarantee if it will improve.
    Answer by: Baader Web Team (Admin) on Dec 1, 2020 11:02:00 AM
  54. Rated: 0
    11/30/2020 4:37 PM Baader T-2 / 15 mm Extension Tube (T-2 part #25A)
    I would like to experiment ep projection with my Morpheus eps and an APS-C Mirrorless camera with T2 adapter mounted on the camera flange. Is the recommended extension tube still 30mm, even if the Mirrorless camera backfocus is 17,7mm instead of the 44-46,5mm of a typical DSLR? Or is it lower (15mm, even less?) I am wondering if I should buy just the M43-T2 adapter or also the extension tube. And a 7.5mm M43 extension is already provided with Morpheus EPs

    Answer rated: 1
    The 30mm extension for APS-C is calculated for a DSLR with an additional backfocus of 55mm incl. T-2-adapter. You get this distance with T-Rings which provide the standard T-2-distance of 55mm which is required by old camera lenses with T-thread.
    Our MFT-T-ring provides both: The standard distance of 55mm, or a shorter adaptation when you remove the extension.
    For an APS-C, you should have approximately 55+30=85mm between the T-thread at the eyepiece and the camera sensor, otherwise there will be distortions or vignetting. This is not an exact distance, but a rule of thumb. With a wide-angle eyepiece, you get get closer to the sensor than e.g. with a Plössl or Ortho.
    Answer by: Baader Web Team (Admin) on Dec 1, 2020 10:28:00 AM
  55. Rated: 0
    11/25/2020 1:34 PM Baader T-2 / 15 mm Extension Tube (T-2 part #25A)
    I am trying out eyepiece projection photography using Hyperion Universal Zoom Mark IV together with
    Televue 60mm ApoTelescope and
    Canon 800D/EOS Rebel T7i (US) with 1.61 Crop factor (APS-C ).

    What is the extension tube length that I should be using ?

    (I tried with 30mm extension but still cannot get anything on the camera sensor; Been trying out at focal length of 8-24mm on the eyepieces but still nothing. ) . Am not using any star diagonal in between. Any advice?

    Answer rated: 0
    We recommend 30mm distance between camera and eyepiece for APS-C-cameras, as described in this PDF: https://www.baader-planetarium.com/en/downloads/dl/file/id/444/product/1211/digiscoping_camera_adaptations_for_afocal_photography_and_eyepiece_projection.pdf

    The focus position with the camera should be quite close to that of the eyepiece, when you look at it with your eye. If you can't reach focus for visual observations without the star diagonal, then you should use it also for photography (or some extension tubes between focuser and eyepiece).
    Answer by: Baader Web Team (Admin) on Nov 26, 2020 10:19:00 AM
  56. Rated: 0
    11/24/2020 2:18 AM Filter cell 2" classic (8mm height)
    Are there any instructions on how to unmount and mount filters? I have an Optlong l-extreme that only had threads on one side and is unusable until I found this product.

    Answer rated: 2
    We do not have a set of instructions, but there are tools available for opening camera lenses (basically two screw driver tips where you can set the distance in between, which you can also use to unscrew the locking ring inside of the filter cell. We recommend that you remember which side of the filter faces the telescope, or put the more shiny side towards the telescope to avoid reflections.
    Answer by: Baader Web Team (Admin) on Nov 24, 2020 10:57:00 AM
  57. Rated: 1
    11/23/2020 10:02 PM Alan Gee Telecompressor Mark II (T-2 part #20)
    I have a new C11 EdgeHD with a Celestron OAG. Will this work with what I have for imaging and if so what adapters do I need.

    Answer rated: 4
    The original Alan Gee was designed for Schmidt-Cassegrains and will not work with an EdgeHD for photographic use - it can't be installed inside of the baffle.
    The UAG-II can be used with a binoviewer at an EdgeHD, because it still works fine with the relatively small image circle of a binoviewer (1.25") even on an EdgeHD. But we do not recommend to use it so far away from its optimum position with a camera, where you will notice any aberrations further away from the center of the field of view when you look at the image. Even with a binoviewer, you shouldn't add the additional light path of an Off-Axis-Guider.
    For photography with an EdgeHD, you should use the original Celestron reducers specifically designed for the EdgeHD - then you have a system which is optimised to work.
    Answer by: Baader Web Team (Admin) on Nov 24, 2020 11:02:00 AM
  58. Rated: 0
    11/21/2020 9:40 PM Baader UV/IR Cut / L-Filter
    In the description for this filter it says the UV cutoff point is at 400nm: "Blocks UV below 400nm and IR above 680nm"

    But in the specifications it says the transmission range is 420-680nm. So which one is it?

    Answer rated: 2
    Blocking starts at 420nm; 400nm are completely blocked, as seen on the transmission graph.
    Answer by: Baader Web Team (Admin) on Nov 24, 2020 10:34:00 AM
  59. Rated: 4
    11/19/2020 2:01 PM Baader 2" ClickLock Diagonal Mirror
    I have a 2” clicklock star diagonal which has had the 2” telescope side nosepiece damaged. Is it possible to purchase a new 2” nosepiece separately?

    John.

    Answer rated: -1
    Yes, of course. They are available individually with safety kerfs (included with all Baader 2" prisms/mirrors as standard since about one year):
    https://www.baader-planetarium.com/en/baader-2%22-safety-kerf-nosepiece-with-2%22-filter-thread.html
    or also as traditional nosepiece with undercut (included with previous versions):
    https://www.baader-planetarium.com/en/baader-2%22-nosepiece-with-2%22-filter-thread.html
    Answer by: Baader Web Team (Admin) on Nov 20, 2020 11:17:00 AM
  60. Rated: 2
    11/18/2020 12:49 PM Carl Zeiss 1¼" Abbe Barlow lens 2x
    Can we use this barlow after a Wynne coma corrector (Asa Korr4 '') for a Newton f / 3.
    Could the fast f / 3 aperture be a problem?
    Thank you.

    Answer rated: 0
    This will not work as the barlow can most likely not be placed in the right spot (because there is the Wynne corrector). And the Barlow is calculated for a curved field so the image will be bad outside the exact middle.
    Answer by: Baader Web Team (Admin) on Nov 18, 2020 4:16:00 PM
  61. Rated: -1
    11/17/2020 6:33 AM Baader FlipMirror II Star Diagonal
    I have a Meade LX90 with the Peterson Eyeopener 2” conversation. This allows a 2”diagonal or lens to be inserted.
    I also have a DSLR with the T2 adapter for Astro photography. Can you tell me specifically what additional adapters i will need to connect the flip mirror to the 2” opening on the Meade and to allow 2” eyepiece plus the DSLR?

    Answer rated: -1
    To attach the BFM-II to a 2" eyepiece clamp, you can use 2" / S52 Nosepiece # 2958551

    Please note that the upper port is restricted by the T-2-thread and the diameter of the diagonal. The usable field is 32mm, equal to our 32mm T-2 prism diagonals.

    You can screw a standard DSLR with standard T-ring directly to the back of the BFM-II. There are small set screws to adjust the rotation of the camera with a screw driver or an allen key. The distance from the sensor to the flip mirror is then 55mm (the standard flange distance of T-2).

    On the upper port, you can use the M42i x 0.75-ClickLock (Astro T-2 System) #2956242 with a height of 36,6mm. Then you need a T-2-extension of ca. 18mm to bring eyepiece and camera to the same focal distance. It might be the best to use the shorter Baader T-2 / 15 mm Extension Tube (T-2 part #25A) # 1508154 and let the eyepiece stick out a little bit, or to use a 7.5mm or 15mm extension between camera and flip mirror and a Vari Lock for the eyepiece holder. We can't give a final anser to this, because not all eyepieces have the same focus position - it is often at the top of the 2" nose piece, but it may vary. For 1.25" eyepieces, you have to take the length of the 1.25"-adapter into account, too. The shortest solution is Baader Pushfix Reducer 2" to 1¼" (T-2 part #15a) # 2408151.

    For more about this, please take a look at this article: https://www.baader-planetarium.com/en/blog/using-the-flipmirror-the-correct-working-distances/

    You ned to place the field stop eyepiece at the same distance from the BFM-II as the camera; and it is easier to vary the eyepiece positin than that of the camera.
    Answer by: Baader Web Team (Admin) on Nov 17, 2020 10:42:00 AM
  62. Rated: 0
    11/17/2020 12:44 AM 2" BDS-SC Baader Diamond Steeltrack® Focuser
    Is there an adapter that will fit the male threads of Celestron 925 Edge HD on the rear cell and also fit the back of the @"BDS-SC female threads with the 2" adapter removed.
    Second question: Is this advisable?
    Thank You for any information that you may provide.

    Answer rated: 0
    The 2" BDS-SC Baader Diamond Steeltrack® Focuser includes adapters for both the 2"-SC-thread of the smaller Celestron SC/EdgeHD as well as for the larger 3.3" thread of the larger models up to the C14. So, you can easily install it.

    It's length is between 82 and 112 mm, the optimum back focus of the EdgeHD925 is 146,05mm from the end of the 3.3" thread. For photography, you should try to bring the camera into a position as close as possible to that distance. Visual use is less critical, although 2" star diagonals usually require about 11cm of optical length (prism diagonals need a little bit less).

    We know of several users who use the SteelTrack and are satisfied. We just wouldn't recommend it in combination with the Celestron reducer, as it is designed for the specified distances to both telescope and camera.
    Answer by: Baader Web Team (Admin) on Nov 17, 2020 1:18:00 PM
  63. Rated: 4
    11/15/2020 4:08 AM Baader UV/IR Cut / L-Filter
    Can this be used with M48 extension tubes e.g. when getting a particular spacing and including UV/IR cut filter?

    How thick is the filter excluding the male thread e.g. 8mm or 10mm?

    When calculating thickness how much thickness can be subtracted e.g. filter is 2mm or 3mm thick and light path is reduced by a percentage of this.

    As an example, I have an 30mm M48 extension tube. If I include this filter, how much path length does the filter take e.g. I also require a 20mm M48 to make an equivalent path length.

    I have a ZWO camera and a ZWO T2 - M48 adapter with zero path length. I plan to screw this adapter into the UV/IR filter (how deep is the female thread) and attach this to my camera's T2 male thread.

    Simon

    Answer rated: -1
    The filter cell is cmopatible with M48 extensions, but it is not the same thread, as there are various 2" filter threads, and we have designed our filter cells to work with most eyepieces. So, it will work, but we wouldn't recommend it for highest payloads, and please check how good it fits.

    Most of our filters use low-profile filter cells with 6mm height (excluding the threads), the higher 8mm filter cells can mostly be found on older second-hand filters.

    The filter glass adds approximately 1/3 of its thickness to the optical path. So, a 2mm filter will move the focus ca. 0.66mm outwards.
    Answer by: Baader Web Team (Admin) on Nov 16, 2020 11:37:00 AM
  64. Rated: 0
    11/13/2020 12:03 PM 2" BDS-RT Baader Diamond Steeltrack Focuser
    I want to put an Steeltrack on my Sky-Watcher 100ED Black Diamond dual speed. What kind of adapter would need?

    Answer rated: -1
    You need 2" BDS-RT Baader Diamond Steeltrack Focuser # 2957210 and probably one of the following adapters:
    RT-Adapter Ø 97mm Diamond Steeltrack® (Synta / Celestron) # 2957282
    RT-Adapter M90x1 Diamond Steeltrack® (Skywatcher) # 2957283
    RT-Adapter M90x1.5 Diamond Steeltrack® (Skywatcher) # 2957284
    Unfortunately, we do not have the specifications of all telescopes available, and sometimes models change, so we'd have to ask you to take a look a the adaptiion of your current focuser. Usually, it is either connected with a couple of screws, or through a thread. Unfortunately, SkyWatcher uses two very similar questions. If the thread isn't specified in your telescope's manual, you can easily measure it - we have described here how to measure a thread: https://www.baader-planetarium.com/en/blog/clicklock-clamp-for-your-telescope/
    Answer by: Baader Web Team (Admin) on Nov 16, 2020 11:00:00 AM
  65. Rated: 1
    11/13/2020 12:37 AM 2" BDS-RT Baader Diamond Steeltrack Focuser
    I am wondering what is required to use this focuser with a Takahashi 76dcu.

    Answer rated: 1
    I´m sorry but we don´t have an adapter to connect the BDS RT onto this Takahashi OTA. Maybe you find out the sizes/threads and a source for
    a custom made adapter. A deatiled technical drawing of our BDS RT you can find here:
    https://www.baader-planetarium.com/en/downloads/dl/file/id/28/product/2858/bds_rt_dimensions_technical_drawing.pdf
    Please notice also if the inner tube of the BDS RT does not collide with the baffle from the refractor.
    Answer by: Baader Web Team (Admin) on Nov 16, 2020 12:54:00 PM
  66. Rated: -1
    11/12/2020 9:37 PM Baader T-2 Conversion Ring
    Hello, quick question- what adapter should I purchase to connect outer T2 threads to outer T2 threads? Or is there another solution? I have two adapters that I am trying to connect, and I've run into a situation where I have a T2 adapter with M 42 x 0.75mm outer threads butting up against another T2 adapter with M 42 x 0.75mm outer threads. Thanks!

    Answer rated: -1
    Sorry about the delayed reply! This product where you're asking the question from (#2958110) serves exactly your needed purpose.
    Answer by: Baader Web Team (Admin) on Dec 11, 2020 10:27:00 AM
  67. Rated: 0
    11/12/2020 5:53 PM SpecTrack Autoguiding Software for Spectroscopy
    Does the software work with an alpy 600 (calibration and guidance modules).
    thank you for your reply

    Answer rated: 0
    A TIS (The Imaging Source) guiding camera or a guiding camera with Direct-Show driver is needed.
    The software itself is independant from the type of spectrograph used.
    Answer by: Baader Web Team (Admin) on Nov 13, 2020 10:34:00 AM
  68. Rated: 0
    11/12/2020 1:01 PM Baader Multi-Purpose Vario Finder 10x60 (single or with MQR-IV finder holder)
    Is it possible to attach a linear focuser along with the MaxBright binoviewers to the Vario-Finder?

    Answer rated: 0
    Not without highly modifying it - it has got a focal length of 250mm, the binoviewer requires about 110mm of optical path, and even with the 2.6x glasspath corrector, it still needs ca. 65mm - plus a star diagonal, which adds another 35mm or more. So, the star diagonal needs to be less than 15cm behind the lens. We do not have a 1.25" standard focuser which is sturdy enoughto carry high loads - and a binoviewer plus eyepieces is heavy and long. That's why we use the simple, but sturdy focusing by moving the whole tube (when used as a finder or with a camera, you don't need to refocus often, and focussing can be done surprisingly fine).

    And if you shorten the tube to attach another focuser, you might loose light because the beam of light is vignetted. This is not a modification which we would try.
    Answer by: Baader Web Team (Admin) on Nov 13, 2020 10:43:00 AM
  69. Rated: -1
    11/12/2020 8:56 AM Baader M68 Extension tube 7.5mm
    I want to attach to a 2.7 inch (68.5mm) Astrophysics focuser.
    I think they use 0.75tpi threads. What is the thread size for this adapter?

    Answer rated: 4
    If not otherwise mentioned, the M68 threads on our website are always according to Zeiss-norms: M68 x 1
    However we do have 2.7" adapters to allow the Baader/Zeiss M68 system family to be used with AstroPhysics refractors.
    The following two adapters are available:

    # 2458220: Baader M68x1 (female) to 2.7" (male) https://www.baader-planetarium.com/en/baader-adapter-2.7%E2%80%9Dm-(ap)--m68f-(zeiss).html
    # 2458221: Baader M68x1 (male) to 2.7" (female) https://www.baader-planetarium.com/en/baader-adapter-m68a-(zeiss)--2.7%E2%80%9Di-(ap).html
    Answer by: Baader Web Team (Admin) on Nov 12, 2020 9:15:00 AM
  70. Rated: 0
    11/11/2020 1:24 AM 2" BDS-RT Baader Diamond Steeltrack Focuser
    Just asked about adapter to William Optics megrez. It has 90 mm fine male thread at tube end.

    Answer rated: 0
    This adapter should let the Diamond Steeltrack focuser matching onto the Megrez:
    https://www.baader-planetarium.com/en/rt-adapter-m90x1-diamond-steeltrack-(skywatcher).html pitch is 1mm


    Answer by: Baader Web Team (Admin) on Nov 11, 2020 8:59:00 AM
  71. Rated: 0
    11/9/2020 2:14 PM BCF 1 - DSLR Astro Conversion Filter for Canon APS-C Cameras (all latest Models)
    Is this suitable fit for EOS 800D too?

    Answer rated: -1
    Yes also for 800 D (all latest Models!)
    Answer by: Baader Web Team (Admin) on Nov 10, 2020 10:05:00 AM
  72. Rated: 0
    11/8/2020 10:18 PM Baader 2" Four-in-One Adapter M68 (Zeiss) / 2.7" (A.P.) / M60 (Vixen) / M56 (Synta)
    i need an adapter for a Vixen ED103S. I would like the adapter to screw 0nto the the M60 female thread on the focal reducer, and reduce down to a threaded M48 ort M42 male thread for connecting the imager - all threaded connercvtions if possible.
    haver anything?

    Answer rated: -1
    Please check out our T-2 Four-in-One Adapter #2458225:
    https://www.baader-planetarium.com/en/baader-four-in-one-adapter-m68t-2m68.html

    This adapter has a M60a male thread on one side and a T-2 male thread on the other side, see application images. If you prefer M48, you could purchase additionally the M68a to M48a Adapter #2458229
    https://www.baader-planetarium.com/en/accessories/adapters-imaging-accessories/m48-adapter-system/m68a-to-m48a-reducing-ring.html
    Answer by: Baader Web Team (Admin) on Nov 9, 2020 9:26:00 AM
  73. Rated: 1
    11/6/2020 4:49 AM Baader MaxBright® II Binoviewer with case
    I have the MaxBright II and the 2" 1,7 GPC to use with my Newtonian (Orion XT10G). It arrived today. The instructions clearly state that I must remove the T2 Counternut with the Zeiss microbayonet. However, when I do this, there does not seem to be a way to connect the GPC to the MBII. However, if I leave that counternut in place, and do not put on the microbayonet, I can easily thread the GPC to the MBII. Can you help me eliminate the confusion?

    Answer rated: 0
    What we wanted to express in the manual was that you should remove the T-2 thread from the binoviewer and install the Zeiss bayonett instead. So, it should read as "replace one with the other", not as "remove both".

    There are two versions of the Newtonian Glasspath Corrector:
    2" Glasspathcorrector® 1,7x for Newtons # 2456300
    does not have a thread - it fits onto the Zeiss Microbayonett of our MaxBright and Giant binoviewers.

    I think you have
    2" Glasspathcorrector® 1,7x for Newtons incl. T-2 change ring # 2456301
    This is the same part, but it includes the Microbayonett (Baader (TCR) Hardened Steel T-2 ChangeRing (T-2 part #07) # 2456320), which is already installed on the MaxBright II binoviewer. If you have #2456301, then it is the shiny ring with the T-2-thread - it can be removed by opening a small clamping screw next to it. In this case, you have bought one T-2 change ring too many.
    Answer by: Baader Web Team (Admin) on Nov 6, 2020 11:09:00 AM
  74. Rated: 1
    11/4/2020 6:11 PM Baader Tripod Adapter Flange for NexStar SE / EVO
    You mention Vixen tripods. Will this adapter fit the standard Vixen Super/Great Polaris/CG-5 tripod hub?

    Answer rated: 0
    It works e.g. with the tripods of CG-5, HEQ-5, Vixen Great Polaris (DX), but not with the smaller base of the older Vixen SuperPolaris DX, as the SP-DX has got a much smaller base pin.
    Answer by: Baader Web Team (Admin) on Nov 5, 2020 8:41:00 AM
  75. Rated: -1
    11/4/2020 3:19 PM Baader 2" ClickLock eyepiece clamps (from T-2 to 4,1")
    Which Baaader 2" ClickLock should I choose for my SkyWatcher Mak-Newtonian 190mm reflector?

    Answer rated: 0
    SkyWatcher uses several threads, so we'd have to ask you to check the thread at your specific telescope as we don't have it here.
    The typical SkyWatcher-threads are:
    #2956251 M54a x 0,75-2" (TS-Optics / SkyWatcher)
    #2956254 M54a x 1-ClickLock (Skywatcher / Orion)
    #2956256 M56i x 1-ClickLock (Skywatcher / Celestron)
    #2956257 S57-ClickLock (Skywatcher / Celestron)
    #2956274 M74i x 1-ClickLock (Skywatcher Esprit, TS-Optics, Omegon)

    You can find a description on how to measure a thread here:
    https://www.baader-planetarium.com/en/blog/clicklock-clamp-for-your-telescope/
    Answer by: Baader Web Team (Admin) on Nov 5, 2020 8:32:00 AM
  76. Rated: 0
    11/4/2020 11:42 AM Expansion Ring M55a to M68i
    Hello, please is this Expansion Ring M55 thread compatible with M55 thread on BDS NT Focuser?

    Answer rated: 0
    Sorry about the delayed reply. We've tested this now and can confirm, that the this M55a to M68i ring does indeed fit onto the M55 thread of the BDS-NT focuser, after the standard 2" clamp of the focuser has been removed.
    Answer by: Baader Web Team (Admin) on Nov 11, 2020 10:03:00 AM
  77. Rated: 0
    11/3/2020 8:33 AM Baader IR-Pass Filter (685 nm)
    Is it possible to modify the 2" filter in order to fit into an Optec IFW filter wheel that is designed for 50mm filters?

    Answer rated: 1
    Unfortunately we don´t have an solution or an adapter for this purpose
    Answer by: Baader Web Team (Admin) on Nov 3, 2020 9:11:00 AM
  78. Rated: 0
    11/2/2020 9:49 PM Baader 2" ClickLock Diagonal Mirror
    I have a Baader 2" click lock diagonal (#2956100) directly mounted to a SCT with a Baader 2" Nexstar locking ring. I just received a Baader 2" filter, but can find no way to insert this into the optical path, before or after the mirror. Is there an adapter available for this. Ideally, I would like to leave the filter in places instead of moving it from one eyepiece to another.

    Answer rated: 0
    You can insert the Baader 2"/2" Inverter Ring with 48mm filter thread # 1508020 into the thread on the inside of the eyepiece side of the star diagonal as shown in this picture: https://assets.baader-planetarium.com/media/extendware/ewimageopt/media/inline/d1/9/baader-2-clicklock-diagonal-mirror-12b.jpg. This should also work when the Clicklock is attached to the star diagonal - please take a look inside the Clicklock to see if the thread is fully acessible, so that you can screw the ring into it.

    The ring has got a filter thread and is 12mm long, so either our 6 LPFC or 8mm filters will work.

    The other options would be inserting the filter into the 2"/1.25" reducer for your 1.25" eyepieces, or using either #2956237 37mm ClickLock extension or #2956247 47mm ClickLock extension
    Answer by: Baader Web Team (Admin) on Nov 3, 2020 9:58:00 AM
  79. Rated: 0
    11/1/2020 11:35 PM Baader 2" to 1¼" ClickLock Reducer (T-2 part #15B)
    I have a celestron cpc11 and want to use a baader twist lock system
    Can you tell me what I need

    Thanks Andrew

    Answer rated: 2
    You need #2956233 SCL (3,3")-ClickLock (9¼" HD, 11" SC/HD and 14" SC/HD).
    It screws onto the 3.3" thread of the telescope and provides the largest possible aperture.

    The #2956220 SC / HD (2")-Clicklock (5" SC, 6" SC/HD, 8" SC/HD and 9¼" SC) for smaller telescopes would also fit on the 2" SC-thread of your telescope, but we recommend the larger one to get the most out of your bigger telescope.

    To use 1.25" eyepieces, you need Baader 2" to 1¼" ClickLock Reducer # 2956214 in addition.
    Answer by: Baader Web Team (Admin) on Nov 2, 2020 9:38:00 AM
  80. Rated: -2
    10/31/2020 3:38 AM Baader CCD Complete Filterset II (L-RGB-C / H-alpha 7nm / OIII 8.5nm / SII 8nm)
    Will your 2" filters fit in a ZWO 7 position 2" filter wheel (ZWO EFW (5 x 2″/7 x 2″). Just want to double check before ordering.
    Thanks

    Answer rated: -1
    Yes, this should fit.
    Answer by: Baader Web Team (Admin) on Nov 3, 2020 11:17:00 AM
  81. Rated: 1
    10/30/2020 3:36 PM Baader Wide-T-Ring Nikon Z (for Nikon Z bajonet) with D52i to T-2 and S52
    What do I need to connect my z6 to my Celeste on edge11?

    Answer rated: 0
    The Nikon Z has got a flange distance of 16mm, the Wide T-ring adds another 8.3mm, so it's backfocus is 24.3mm.

    The Celstron M48-adapter #93622 is designed for 55mm of backfocus, so you need another 30.7mm of extension rings. The Celestron M48 adapter set #93618 contains a 30mm ring, which is close enough - the missing 0,7mm for perfect distance can be filled with Baader M48 Fine-Adjustment rings (0,3 / 0,5 / 1 mm) - https://www.baader-planetarium.com/en/accessories/adapters-imaging-accessories/m48-adapter-system/m48-fine-adjustment-rings-(03--05--1-mm)---aluminium.html . You should be within 0.5mm of the optimum backfocus distance for best images, so the 0.5mm-ring will be fine.

    You might also use variable T-2-extensions, but for a full-frame camera, we recommend the M48-system to avoid vignetting.
    Answer by: Baader Web Team (Admin) on Nov 2, 2020 11:23:00 AM
  82. Rated: -1
    10/29/2020 1:22 PM Baader Q-Barlow 2.25x / 1.3x
    1) Using the T2 part#05 extension tube with just the lens cell does one have to take into account the length of the filter thread to work out the amplification factor? If so, I've calculated that allowing a few mm for the thread the amplification would be approximately 1.75x. Have I got this correct please?

    2) Using the extension tube with the complete Barlow and adding a few millimetres for the filter thread I make the amplification approximately 2.75x amplification. Is this correct please?

    Many thanks.

    Answer rated: 2
    You can ignore the filter threads - we always give the optical length, which is not the mechanical length, but the length which a part actually adds to an optical train and which takes in account any lenses or other stuff inside of the adapter.

    If you screw the Barlow directly into the ca. 23mm long barrel of a Classic Ortho, you get a magnification of ca. 1.3x, if you add the 19mm long Baader 1¼" - 31.8mm nosepiece extension with 1¼" filter thread on both sides (T-2 part #05) # 1905130, you get a distance of ca. 42mm and a magnification of ca. 1.6x.

    Please note that these are only approximate values, both because the formula gives only a rough value, and because the position of the field stop varies if you use different eyepieces.
    Answer by: Baader Web Team (Admin) on Nov 2, 2020 12:03:00 PM
  83. Rated: 0
    10/28/2020 9:14 PM StarAid Revolution Standalone Autoguiding - Revision A
    Des questions autour de moi concernant "the StarAid Revolution" :
    1) Pour ce qui est de la mise au point, "comment on contrôle que les étoiles sont focalisées ?"
    2) Et "comment gérer le dithering également ?"

    Answer rated: 0
    Le dithering est actuellement impossible mais le logiciel est en constante évolution. La mise au point se fait manuellement et est très facile et simple
    Answer by: Baader Web Team (Admin) on Oct 29, 2020 9:29:00 AM
  84. Rated: 1
    10/27/2020 4:28 PM Baader UBVRI Photometric Johnson/Bessel B-Filter (4mm Glass)
    I'm writing to confirm that the Baader UBVRI Photometric B-Filter 1¼" (4mm glass) is in a threaded cell. I ask because some other manufacturers use non threaded cells. I plan to mount this filter in an SBIG CFW-10 filter wheel. And do you have one in stock??

    Answer rated: -1
    As shown on the photo the 1,25" filters are in our regular threaded cell. You can see on the website the green or orange traffic light below the price shows if a product is in stock.
    Answer by: Baader Web Team (Admin) on Oct 28, 2020 9:16:00 AM
  85. Rated: -1
    10/26/2020 10:43 PM 2" BDS-RT Baader Diamond Steeltrack Focuser
    Will the BDS-RT fit on the Baader Vario 10X60 finder scope? Will I need an adapter? Which adapter?

    Thank you,
    Bob

    Answer rated: 0
    Unfortunately this wont work for the following reasons:
    1. the focuser would be heavier than the scope
    2. there is not enough backfocus.
    3. the included standard sliding focus is the ultimate help to save on backfocus and it works precisely if the centering screws are pretightened with care.
    Answer by: Baader Web Team (Admin) on Oct 27, 2020 9:03:00 AM
  86. Rated: 0
    10/22/2020 3:17 PM Baader Tripod Adapter Flange for Celestron CGEM-DX and CGE-Pro
    hello, this product can connect CGEM II EQ MOUNT HEAD with any tripod?

    Answer rated: 2
    As written on the product page, this item is designed for Baader Aluminum and hardwood tripods. It does not fit to other tripods
    Answer by: Baader Web Team (Admin) on Oct 22, 2020 3:27:00 PM
  87. Rated: 0
    10/20/2020 7:54 PM Glasspathcorrector 1:2,60 for Baader-Binoviewer with Zeiss ring dovetail (MaxBright® II and Mark V)
    Is it available the GPC housing alone (without the lens) ?
    If yes could you inform about the part number?

    Answer rated: 4
    No, unfortunately the housing alone is not available as individual item.
    Answer by: Baader Web Team (Admin) on Oct 21, 2020 7:53:00 AM
  88. Rated: 0
    10/20/2020 4:05 AM Baader MaxBright® II Binoviewer with case
    Are 2 Baader Zoom eyepieces a good match for this binoviewer?

    Answer rated: 1
    Yes, no problem - we designed them with the bino-viewer in mind, that's one of the reasons for the click-stop at several magnifications. Just ake sure that they are from the same series, you can'x mix e.g. Mark III and Mark IV.
    Answer by: Baader Web Team (Admin) on Oct 20, 2020 11:55:00 AM
  89. Rated: 0
    10/18/2020 8:45 PM Baader 2" NexStar locking ring.
    So I could screw this straight onto my Celestron CPC1100 and then screw the baader click lock diagonal straight into the ring?

    Answer rated: -1
    Yes, this is how it works. The ring is used like a lock nut.
    Answer by: Baader Web Team (Admin) on Oct 19, 2020 8:47:00 AM
  90. Rated: 1
    10/18/2020 7:17 AM RT-Adapter M90x1 Diamond Steeltrack® (Skywatcher)
    Can this be used on a SC version of the steeltrack focuser?

    Answer rated: 1
    No, this part is only compatible with the BDS-RT (Baader Diamond Steeltrack for Refractors)
    Answer by: Baader Web Team (Admin) on Oct 19, 2020 9:11:00 AM
  91. Rated: -1
    10/17/2020 3:11 PM Baader Pushfix Reducer 2" to 1¼" (T-2 part #15a)
    Hello, I would like to know the TOTAL length of the Pushfix reducer (optical lenght 1mm). Can I used this product as a reducer to make a 1 1/4" eyepiece fit into a clicklock socket? Thank you!

    Answer rated: 1
    The total mechanical height is 31 mm. If you remove the side clamping screw and attach the pushfix to your 1.25" eyepiece as illustrated in option 2 or option 3 in the pushfix manual, you can also use the pushfix with any 2" ClickLock.
    Pushfix manual: https://www.baader-planetarium.com/en/downloads/dl/file/id/180/product/1072/multi_purpose_applications_of_baader_pushfix_adapter.pdf
    Answer by: Baader Web Team (Admin) on Oct 19, 2020 9:21:00 AM
  92. Rated: 0
    10/16/2020 12:59 AM Baader SC / HD Ultra Short T-Adaptor, 7mm optical length
    I just purchased a Flipmirror II and I need to connect it to my Meade RCX400 14". Can you give me a list of the exact pieces I need to purchase to make that happen? I'm assuming I need this and a 40 mm extension tube to get to the flip mirror and then a connector to the camera (Meade DSI IV) and connector for 2 inch eyepiece. Also a connector for an off axis guider but I know which one I need for that. Thanks for your help!

    Answer rated: -1
    If your telescope does have a standard 2" SC-thread, you can use this adapter to connect the FlipMirror either directly to your telescope, or through a T-2-extension, if desired.

    You need to bring the camera sensor and the field stop/image plane of the eyepiece into the same distance from the FlipMirror.
    For a 2" eyepiece, you can use
    #2956242 M42i x 0.75-ClickLock (Astro T-2 System) - 36,6mm long
    plus a 1.25"-adapter like
    Baader 2" to 1¼" ClickLock Reducer (T-2 part #15B) # 2956214 - 9.5mm long
    or
    Baader Pushfix Reducer 2" to 1¼" (T-2 part #15a) # 2408151 - 1mm long

    But we usually recommend a 1.25" focussing eypiece clamp instead, to do some fine adjusting between camera and eyepiece. Or you can use a clamping ring to set one eyepiece to the same focus as the camera. Usually, the focus position of several eyepieces is slightly different.

    I can't find the backfocus of your camera to determine how many T-2-extensions you need for the camera.

    Please take a look at this article about determining the correct distances:
    https://www.baader-planetarium.com/en/blog/using-the-flipmirror-the-correct-working-distances/
    Answer by: Baader Web Team (Admin) on Oct 19, 2020 10:59:00 AM
  93. Rated: 2
    10/15/2020 2:35 AM Baader 2" ClickLock eyepiece clamps (from T-2 to 4,1")
    What 2" Clicklock for Takahashi 76DS ? Sky90 focuser.?

    Answer rated: 1
    Please check out our 2" ClickLock M64a clamp (Takahashi) #2956264
    https://www.baader-planetarium.com/en/baader-2%22-clicklock-eyepiece-clamps.html#574=938
    Answer by: Baader Web Team (Admin) on Oct 15, 2020 7:44:00 AM
  94. Rated: 0
    10/14/2020 11:59 PM ACF 2 DSLR Astro Conversion Filter Canon EOS 350D/20D/10D/30D
    Does this Filter work against Light Pollution , or as a Light Pollution filter ?

    Answer rated: 0
    This filter allows more transmission in red part of the spectrum to make Hydrogen (Halpha) glow of nebulae way better visible on the photos. But it is not shielding light pollution. For this you should additionally install an UHC-S filter in front of your camera
    Answer by: Baader Web Team (Admin) on Oct 15, 2020 8:08:00 AM
  95. Rated: 1
    10/11/2020 6:34 AM Baader 10mm Hyperion 68° Modular Eyepiece
    I bought Hyperion 68modular eyepiece. There is no green colored ring as printed in box. Is this ok?

    Answer rated: 1
    The ring of the Hyperion 10 mm eyepiece looks indeed a bit different to what has been illustrated on the packaging and in the advertizing images, we apologize. It looks in reality a bit more "greyish" and not bright green.
    Answer by: Baader Web Team (Admin) on Oct 12, 2020 8:15:00 AM
  96. Rated: 0
    10/9/2020 4:59 PM 2" Glasspathcorrector® 1,7x for Newtons
    Lets say I attach a filter wheel or and Atmospheric dispersion corrector between GPC and binoviewer, i.e. I introduce additional 4 cm of lightpath between GPC and bino. Could you elaborate on two questions:
    - how much approximately would the 1.7x factor increase;
    - would that additional lightpath negatively affect the coma-correcting properties?

    Answer rated: -1
    It is possible to increase the distance between glasspath corrector and bino-viewer, but this shortens the gain in backfocus by about half the length of the additional distance. We did not measure the change in focal length, but it should behave similar to a Barlow lens as described in this PDF: https://www.baader-planetarium.com/en/downloads/dl/file/id/240/product/1062/calculating_different_magnifications_with_the_vip_barlow.pdf

    A moderate chang in the distance of some cm (like 4 cm for a T-2-prism) doesn't harm the image quality too much.
    Answer by: Baader Web Team (Admin) on Oct 12, 2020 1:52:00 PM
  97. Rated: 0
    10/6/2020 5:39 AM Baader TQC/TCR Heavy duty T-2 Quick Changing System (T-2 part #06A & #07)
    How much weight will this hold? I want to put it in the front of my 8" SCT imaging train which includes: (Baader Heavy Duty Quick Connector) -> Celestron Focal reducer -> Celestron Heavy Duty OAG (w/ZWO ASI1744 mini guide camera) -> ZWO Filter Wheel -> ZWO ASI294mm monochrome camera.

    Hoping that the heavy duty quick change can easily hold this but wanted to ask to be sure.

    Thanks!

    --Ryan

    Answer rated: 0
    We never performed any strength tests "until it breaks", and it is hard to give a number, because this also depends on the lever. But I can lift an 80/600 lens telescope (ca. 3.5kg) easily by holding it only at the accessories, which are connected through the TQC, without any fear or problems (except for the focuser). So, your camera setup should be no problem, too - the quick-changer deserves the name "Heavy-Duty".

    However, for very high loads and when all possible flexure must be avoided, there is also the M68-system, which also includes a quick-changer: https://www.baader-planetarium.com/en/accessories/adapters-imaging-accessories/m68-zeiss.html
    Answer by: Baader Web Team (Admin) on Oct 6, 2020 9:23:00 AM
  98. Rated: 2
    10/5/2020 11:13 PM Baader Neodymium (Moon & Skyglow) Filter
    I purchased the Neodymium filter and I'm trying to attach it to a Vixen HR 3.4mm eyepiece but the thread inside the eyepiece is recessed enough that the filter thread doesn't reach it being low profile. Do you know of a solution?

    Answer rated: -2
    As the problem is an unusual thread on the eyepiece from another manufacturer we have unfortunately no solution for it
    Answer by: Baader Web Team (Admin) on Oct 6, 2020 12:31:00 PM
  99. Rated: 2
    10/5/2020 2:58 PM Baader O-III 8.5nm CCD Narrowband-Filter
    I have ordered this filter about one month ago from yr dealer in Greece. Any idea for how long I have to wait for delivery?
    thanking you in advance

    Answer rated: -1
    Unfortunately COVID has also caused problems for us. Nevertheless, the production of many articles had to be stopped temporarily because supply chains are interrupted again and again at various points. This affects suppliers of some mechanical parts but especially high-tech suppliers such as our filters. We ask for your understanding for this situation and would like to assure you that we ourselves are working everywhere to solve the supply problems for the components of our products and especially for the filter production and to bring our delivery capacity back to a normal level. The appearance of more and more sensitive CMOS cameras with smaller and smaller pixel sizes forces us to bring the filters, which have proven themselves up to now, to a new technical level. In the future, too, our filters should continue to be the reference - with real measurement curves over the entire spectral sensitivity range of modern CMOS cameras, against which cheap copies must be measured. The development of filter sheet systems, however, requires complex test series, prototype production in each case - and ultimately intensive testing in the night sky. We were in the middle of this process when the pandemie urged us to a break but are very close to producing our filters with further improved properties. You can be assured that we will provide detailed information about the improvements achieved and delivery times are back to normal.
    Answer by: Baader Web Team (Admin) on Oct 5, 2020 3:32:00 PM
  100. Rated: 1
    10/4/2020 7:24 PM 2" BDS-NT Baader Diamond Steeltrack® Focuser
    I would like to use this focuser on my scope using your flat base # 2957231

    Am I forced to buy the 2" BDS-NT Baader Diamond Steeltrack® Focuser # 2957230 with the delivered Versabase that would be useless for me or can I buy only the focuser without it and with of course a lower price ?

    Answer rated: 2
    Very sorry - we do not supply the products with parts taken off. Maybe some dealers could help you on this, but our ERP will not provide the means. Also CoVid is causing such a myriad of delays and personnel-constraints that we have no chance to manage this.
    Answer by: Baader Web Team (Admin) on Oct 5, 2020 11:18:00 AM
  101. Rated: 6
    10/4/2020 11:34 AM Glasspathcorrector 1:2,60 for Baader-Binoviewer with Zeiss ring dovetail (MaxBright® II and Mark V)
    Does this corrector affect the eye relief of my eyepieces?
    I use your Zeiss 1.25 dagonal and Maxbright II binoviewer.
    Thank you!

    Answer rated: -1
    It does not influence Eye relief in a negative way (inward). What might happen is that - like with a barlow-lens - the eye distance does increase slightly.
    Answer by: Baader Web Team (Admin) on Oct 5, 2020 11:07:00 AM
  102. Rated: 1
    10/4/2020 6:32 AM Baader MaxBright® II Binoviewer with case
    I would like to purchase a Baader MaxBright® II Binoviewer but have had conflicting advice as to the adapters i need, from 3 suppliers. I have a Meade LX90 250mm with a FL of 2500mm F/10. I have an upgraded Meade Series 5000 2" Enhanced Diagonal. I use a 10mm Bader Hyperion 68 degree as my absolute favourite eyepiece. I was thinking of getting a Baader MaxBright® II Binoviewer and 2x 7-8mm eyepieces for mostly planetary viewing. Will i need any adapters, or UAG etc?

    Answer rated: 1
    Such questions are being EXHAUSTIVELY - and wonderfully logical - discussed in the Binocular Viewer forum on CloudyNights.

    Using a 2" diagonal will put any binocular viewer in too large a distance from ideal focus of an SC.

    As a result you will vignett the beam without noticing - means your front opening of the optics is being effectively reduced and stars appear dimmer than they are, compared to their appearance when all distances between the tube end and Viewer were minimized. However - people will blame the binoviewer of "being too dim", wheras the dimming is the effect of having lost an inch or so of their telescopes aperture.

    For this reason we have developed the T-2 Star diagonals - which are absolutely made to not cause any vignetting - and to put the (Baader-)binoviewers as near towards the telescope tube a ever possible.

    Pls take the time to do your own research - google for: SC-vignetting w. binocular viewer.
    Answer by: Baader Web Team (Admin) on Oct 5, 2020 12:19:00 PM
  103. Rated: 4
    10/4/2020 4:12 AM Baader 2" ClickLock Diagonal Mirror
    I have a Celestron Nexstar 6SE SCT. Is the 2” diagonal compatible? Do I need adapters, which one?

    Answer rated: 2
    Unfortunately this will not work properly as the housing of the mirror may hit the bottom the mount base when slewing. And the diameter the field of View is smaller than 2" so that you cannot take advantage on this big mirror on the small telescope.
    Answer by: Baader Web Team (Admin) on Oct 5, 2020 4:01:00 PM
  104. Rated: 1
    10/2/2020 9:28 AM Baader MaxBright® II Binoviewer with case
    Do you know when binoviewer will be available?

    Answer rated: -1
    Due to COVID delivery chains are broken, production lines are stopped, freight chains are unsecure. We can only apologize that we are unable to predict delivery times due to these circumstances.
    Answer by: Baader Web Team (Admin) on Oct 2, 2020 4:27:00 PM
  105. Rated: 1
    10/1/2020 8:59 PM Baader 2" BBHS ® Mirror Diagonal with 2" ClickLock Clamp
    I have an older 2" BBHS® Mirror Diagonal # 2456115 that fits into my Takahashi TSA-102. I would like to add a Baader Maxbright II binoviewer. Can the Clicklock be unthreaded to reveal a T2 thread? I saw somewhere about removing the small hex bolts (about 1 mm) that circle the side of the clicklock closest to the mirror. However, they seem impossible to remove as I can't find a tool that small. On the other hand the clicklock seems to be on very tight so I don't won't to force it if it is not threaded.
    If it can't be removed I may buy a prism diagonal for very slightly better stray and scattered light performance. Do you think that this assessment of scatter is true?

    Answer rated: 2
    The Clicklock uses M2.5 hex screws, so you need a 1.3mm Allen key as described in this PDF: https://www.baader-planetarium.com/en/downloads/dl/file/id/1559/product/3030/adjusting_the_clicklockr_lever.pdf
    If you remove the ClickLock, you can access a SC-thread. To turn it into a T-t-thread, you need Baader Adapter 2" (male) / T-2 (male) # 1508035

    Light scattering should be no issue with this mirror, but we usually recommend a T-2-prism, as it provides the shortest possible adaptation. That way, you can work with a glasspath corrector with a lower magnification factor, and you may avoid vignetting by a fully retracted focuser tube inside of the telescope.
    Answer by: Baader Web Team (Admin) on Oct 5, 2020 12:25:00 PM
  106. Rated: 5
    9/30/2020 1:57 PM Baader Double Polarizing Filter
    My Baader Hyperion 5mm Eyepiece without his ruber ring offers two thread : M43 and SP54 (male) What ring adapter model is necessary for use a 2" filter like this one : Baader Double Polarizing Filter 2" ( #2408344) ? It seems I need a "female 48 / female SP54" ? Thank you

    Answer rated: 0
    Placing a 2" filter behind the eyepiece will cost you a lot of eye relief - the 2" double polarizing filter will cost you 15mm, so that you will have only 5mm of eye relief remaining.

    It might be possible with Baader DSLR-2" Filter Holder M48/SP54, # 2408166, but I didn't try it out - it has got a length of 5mm, then you'd have no more eye relief and wouldn't be able to look through the eyepiece...

    You can insert 2"-filters between the 1.25" nosepiece and the 2" body of the eyepiece, but this will change the focal length of your eyepiece to ca. 4-4.5mm as described in this PDF: https://www.baader-planetarium.com/de/downloads/dl/file/id/134/product/1209/hyperion_eyepieces_application_examples.pdf

    The recommended solution would be a 2"/1.25"-reducer with 2" filter thread, if your telescope has got a 2"-focuser: https://www.baader-planetarium.com/en/accessories/adapters-imaging-accessories/eyepiece-clamps.html?filter_adapters_type=244&filter_threads_lenssided=575
    Answer by: Baader Web Team (Admin) on Oct 1, 2020 10:19:00 AM
  107. Rated: 0
    9/30/2020 8:38 AM Universal Alan Gee II - Telecompressor (UAG II)
    I have a C8 EdgeHD with a UFC in front of the flip mirror. I’d like to use the UAG II along with the Maxbright II binoviewers. Is this possible? How much if any does the UAG II add backfocus?

    Answer rated: 0
    This should be no problem, you can screw the UAG-II with the provided T-ring onto the T-thread upper port of the FlipMirror.
    Unfortunately, we have never measured the change in back-focus, as this is hard to do with an SC/EdgeHD with its moving main mirror.
    Answer by: Baader Web Team (Admin) on Oct 1, 2020 1:11:00 PM
  108. Rated: -1
    9/29/2020 11:37 PM 2" BDS-NT Baader Diamond Steeltrack® Focuser
    Hello, I have this focuser, is there any plan to build a focuser riser? I use my scope with 2 different coma correctors. One shifts original focus 35mm outward, and other one shifts original focus 15mm inward. To achieve focus with relative same drawtube position i need 50mm and move mirror but have only 30mm because of tube dimensions and need to lengthen optical path by additional 20mm. For example Feathertouch focuser and old Steeltrack have risers available and some of us would appreciate the same thing here. Thanks in advance.

    Answer rated: 0
    We are sorry- such a product is not in our planning for forseeable time.
    Answer by: Baader Web Team (Admin) on Oct 5, 2020 8:02:00 AM
  109. Rated: 0
    9/29/2020 6:38 PM Baader f/2 Highspeed-Filters (H-alpha, O-III, S-II)
    Can you please publish the FWHM of these filters. Its pretty important that the buyer knows this bit of crucial information.

    Answer rated: 1
    We do not publish these values for different reasons for example to not provide production information to our competitors. This is proprietary technology. We let the imaging results speak for themselves. You can find endless reports in the web what these filters can do in terms of results.
    Answer by: Baader Web Team (Admin) on Oct 2, 2020 8:09:00 AM
  110. Rated: 3
    9/29/2020 1:34 PM Baader FCCT (Filter Changer Camera Tilter)
    As the FCCT was announced for february, will the FCCT ever be released? Also is there some information on the Ultra-Highspeed filters for the RASA telescopes?

    Answer rated: 1
    Unfortunately COVID has also caused problems for us. Nevertheless, the production of many articles had to be stopped temporarily because supply chains are interrupted again and again at various points. This affects suppliers of some mechanical parts but especially high-tech suppliers such as our filters.

    We ask for your understanding for this situation and would like to assure you that we ourselves are working everywhere to solve the supply
    problems for the components of our products and especially for the filter production and to bring our delivery capacity back to a normal level. The appearance of more and more sensitive CMOS cameras with smaller and smaller pixel sizes forces us to bring the filters, which have proven themselves up to now, to a new technical level. In the future, too, our filters should continue to be the reference - with real measurement curves over the entire spectral sensitivity range of modern CMOS cameras, against which cheap copies must be measured. The development of filter sheet systems, however, requires complex test series, prototype production in each case - and ultimately intensive testing in the night sky. We were in the middle of this process when the pandemie urged us to a break but are very close to producing our filters with further improved properties. You can be assured that we will provide detailed information about the improvements achieved and delivery times are back to normal.

    Answer by: Baader Web Team (Admin) on Oct 5, 2020 11:38:00 AM
  111. Rated: 0
    9/28/2020 12:22 PM 2" Deluxe eyepiece clamp for SC-telescopes (available with filter holder / extension)
    I have lost the m48 filter holder unit. Will be possible to buy only the M48 filter holder ?
    Or buy only the 2 inch nosepiece unit ?
    Thanks you.

    Answer rated: 0
    Unfortunately the M48 filter holder is a special sub-part for only this clamp and cannot be purchased individually.
    The 2" barrel however can be exchanged. Either by our standard 2" nosepiece with undercut:
    https://www.baader-planetarium.com/en/baader-2%22-nosepiece-with-2%22-filter-thread.html
    or by our 2" safety kerf barrel:
    https://www.baader-planetarium.com/en/baader-2%22-safety-kerf-nosepiece-with-2%22-filter-thread.html
    Answer by: Baader Web Team (Admin) on Oct 5, 2020 9:44:00 AM
  112. Rated: 5
    9/26/2020 1:17 PM Baader SC / HD Ultra Short T-Adaptor, 7mm optical length
    The optical length is listed as 7mm here. Many resellers are listing it as 10mm. My own measurements with calipers say 9mm. Are there multiple versions of this adapter? What is the correct expected optical length?

    Answer rated: 1
    Correct is actually ~7,5mm with the T-2 Finetuning-Ring from the top thread removed. When you leave the finetuning ring on, it is about ~8.3mm.
    Answer by: Baader Web Team (Admin) on Sep 28, 2020 10:11:00 AM
  113. Rated: 3
    9/23/2020 11:08 AM Baader UBVRI Photometric Johnson/Bessel V-Filter (4mm Glass)
    What is clearance required for insertion into a filter drawer - eg the altair astro filter drawer

    Answer rated: 1
    The 1.25" filters come in a Low-Profile filter cell, which is 6mm high (plus the filter thread).

    The filters glass is 4mm thick.
    Answer by: Baader Web Team (Admin) on Sep 23, 2020 4:45:00 PM
  114. Rated: 6
    9/23/2020 9:32 AM Baader MaxBright® II Binoviewer with case
    I am considering a purchase of binoviewer to use with my 305/1500 collapsible SkyWatcher dob. I would like to use ADC for planetary viewing, hence I need at minimum a 2x barlow/f.extender. my question is: could the 2.6 GPC be placed before ADC, i.e. can additional 55mm of lightpath be introduced between the GPC and binoviewer (OTA -> 2.6 GPC -> ADC -> bino)? Focusing distance is not much of an issue, since mirror can easily be moved. I am more interested in understanding how GPC will behave - is it sort of telecentric or 2.6x effect with distance becomes 3x or more.

    Answer rated: -1
    The glasspath corrector behaves more like a barlow lens than like a telecentric - it's best if you think of it as a barlow lens which also corrects the colour aberations of the prisms.
    Answer by: Baader Web Team (Admin) on Sep 23, 2020 12:15:00 PM
  115. Rated: -1
    9/21/2020 9:58 PM Baader 10mm Hyperion 68° Modular Eyepiece
    will this lens work with a Celestron starsense explorer dx 130 or a zhumell Z8

    Answer rated: 1
    Yes, there should be no problem.
    Answer by: Baader Web Team (Admin) on Sep 22, 2020 12:14:00 PM
  116. Rated: 2
    9/21/2020 8:11 AM Baader UV/IR Cut / L-Filter
    Why do you say the filter is only good for 100mm+? I have a 97mm Brandon apochromat. Will it work with it?

    Answer rated: 2
    I can't find where we state that it is only for larger apertures, but there will be no problem using it with smaller telescopes, as long as chosse a matching size.
    Answer by: Baader Web Team (Admin) on Sep 21, 2020 2:48:00 PM
  117. Rated: -2
    9/19/2020 11:18 AM Baader Micro Guide eyepiece with Log-Pot illuminator
    What is the width of the field stop diameter?
    What is the width of the apparent field of view?
    Thank you for the answers.

    Answer rated: 1
    The field of view is 45°.
    We do not have the diameter of the field stop available at the moment, but it is an orthoscopic eyepiece, if this helps.
    Answer by: Baader Web Team (Admin) on Sep 21, 2020 3:11:00 PM
  118. Rated: 1
    9/18/2020 12:47 PM Baader FlipMirror II Star Diagonal
    I would like to use your "flip mirror" as a ligth sources selector with my leitz microscope (LED cool ligth or halogen one); to do this I would like to replace the adapter rings with Leitz ones on two sides of the unit; the third one will be used for straigth connection to microscope inlet (by a locked coupling ring).
    Do you think it is feasible? may you send me a tech drawing with ring holes on the three sides?
    I thank you in advance for your kind answer.
    Best regards

    Answer rated: -1
    We are sure that our FlipMirror II can serve your intended purpose. However we ask you kindly for your understanding that we can't give out more detailed drawings then what has been published on our website already. Please check out the product images which inlude also a drawing. All threads are also explained in detail in the instruction manual.
    Answer by: Baader Web Team (Admin) on Sep 21, 2020 8:53:00 AM
  119. Rated: 3
    9/17/2020 10:01 AM Baader Wide-T-Ring Nikon Z (for Nikon Z bajonet) with D52i to T-2 and S52
    Can I attach the T-Ring to a Takahashi FS-60CB with the Multiflattener 1.04x which has a M52x0.75 thread and requires a backfocus of 87.5mm? Which parts would I need?
    thanks

    Answer rated: 0
    The Nikon Z-bayonet has got a flange distance of 16mm, the Wide T-ring adds 8.3mm. So you have 87,5-24,3=63,2mm remaining for adapters. This should be no problem - but we do not have an adapter from M52 to a more common thread.
    Answer by: Baader Web Team (Admin) on Sep 17, 2020 12:53:00 PM
  120. Rated: 4
    9/16/2020 5:19 PM StarAid Revolution Standalone Autoguiding - Revision A
    Is the StarAid app available for iPhones or iPads? I cannot find it anywhere.

    Answer rated: 3
    It is a web application on the star aid. You just need to connect your device to the StarAid's WiFi access point, then you can use any modern browser, no matter if on smartphone, tablet or laptop/computer.
    Answer by: Baader Web Team (Admin) on Sep 17, 2020 9:13:00 AM
  121. Rated: 1
    9/13/2020 2:57 AM Baader Ultra-Narrowband H-alpha 3,5nm Filter
    Hello,
    What bandwidth is recommended for H-alpha imaging at f/15?

    Answer rated: 2
    We recommend 7nm so that exposure times will be acceptable
    Answer by: Baader Web Team (Admin) on Sep 14, 2020 11:58:00 AM
  122. Rated: 1
    9/11/2020 5:18 PM Alan Gee Telecompressor Mark II (T-2 part #20)
    I want to use the Telecompressor for visual and i want to know how it need to be use with :

    Celestron C11 (no edge)
    2956233 Baader 2" ClickLock SCL (3.3")
    2956100 Baader 2" ClickLock Diagonal Mirror
    2956214 Baader 2" to 1¼" ClickLock Reducer (T-2 part #15B) with 31.5 Eyepieces

    In the manual it seem need :

    2408150 Baader 2" nosepiece to T-2 / M48 (T-2 part #16)
    2958242 Baader Expansion Ring 2"a/T-2i with 1mm optical path length (T-2 part #28)

    But it's not clear. Can you explain ?

    Answer rated: 0
    Yes, that is the recommended installation:
    Remove the 2" nosepiece from the star diagonal, then you have access to an SC-thread
    Insert T-2 Part #: 28 Baader Expansion Ring 2"a/T-2i with 1mm optical path length (T-2 part #28) # 2958242
    Place the collar aof the Alan Gee on the T-2-thread
    Secure it with 2408150 Baader 2" nosepiece to T-2 / M48 (T-2 part #16)
    Then you can insert the star diagonal as usual into the eyepiece holder of the telescope.

    You can change the distance to the eyepiece and by this the reducing factor by adding/removing the included spacer tubes or additional T-2 extensions.
    Answer by: Baader Web Team (Admin) on Sep 14, 2020 1:56:00 PM
  123. Rated: 0
    9/10/2020 10:24 AM 9 mm Morpheus® 76° widefield eyepiece
    On the Morpheus eyepiece is the focal plane at the 2” field stop or the 1 1/4” field stop?

    Answer rated: 2
    Please take a look at the technical data sheet at https://www.baader-planetarium.com/de/downloads/dl/file/id/223/product/2851/morpheus_76_eyepiece_series_technical_data.pdf
    Here, you can find the reference plane (the bottom of the 2" nose piece) and the field stop displacement. For most eyepieces, it is equal to the reference plane. Only for the 17.5mm it is displaced by 2.5mm.
    Answer by: Baader Web Team (Admin) on Sep 10, 2020 10:31:00 AM
  124. Rated: 2
    9/9/2020 2:01 PM Carl Zeiss 1¼" Abbe Barlow lens 2x
    Dear Sir,
    I use a Baader T-2 prism diagonal with a 1,25" clicklock eyepiece adapter.If I insert the Zeiss Abbe barlow lens into this clicklock will this not hit the prism inside the diagonal? I ask because the 1.25" sleve of this barlow seems much longer than the 1.25" clicklock eyepiece adapter I use??
    Thank you very much!
    Best Regards

    Answer rated: 2
    It is indeed too long - the lens is about 12mm longer than the top of the T-thread.
    If you want to use it with a 1.25"-prism, you could use
    Baader T-2 / 15 mm Extension Tube (T-2 part #25A) # 1508154
    Answer by: Baader Web Team (Admin) on Sep 9, 2020 4:15:00 PM
  125. Rated: 0
    9/8/2020 12:07 AM Bundle: Hyperion Universal Zoom Mark IV with Hyperion-Barlow 2.25x (8-24mm / 3.6-10.7mm)
    Its compatible with fast telescopes?

    Answer rated: -2
    It works with all telescopes with 1.25" and 2" eyepiece holder. For fast telescopes, we recommend the use of a coma corrector like the MPCC.
    Answer by: Baader Web Team (Admin) on Sep 8, 2020 1:43:00 PM
  126. Rated: 3
    9/6/2020 12:14 AM Baader M48 Spacer Ring for MPCC III / Protective EOS T-Ring
    Do you have a similar product that goes from M48 to M48 with 2 mm length? I need to use it when I take off the 2 mm from the Baader MPCC M42 choke. Cheers!

    Answer rated: 0
    We do have M48 spacer rings which ca be inserted between to parts with M48-threads. But I woudn't recommend stacking two 1mm-rings if the thread is too short.
    Answer by: Baader Web Team (Admin) on Sep 7, 2020 11:17:00 AM
  127. Rated: 3
    9/4/2020 5:50 AM Baader UFC (Universal Filter Changer)
    Please advise on the parts needed to connect a Nikon Z6 camera to a Takahashi FSQ-106ED. Thank you.

    Answer rated: -1
    A typical adaptation would be, from the camera to the telescope:
    Baader Wide-T-Ring Nikon Z (for Nikon Z bajonet) with D52i to T-2 and S52 # 2408335
    Baader S52 dovetail Camera-Adapter for Wide-T-rings (optical height: 2 mm) # 2459119
    Baader UFC Base (Filter Chamber) telescope-sided S70 dovetail receptor (optical height: 13 mm) # 2459110
    e.g. Baader UFC S70 / M48 (f) Telescope-Adapter (optical height: 1 mm) # 2459129, if our telescope has got a M48-thread, or e.g. Baader UFC S70 / 2" SC-thread (f) Telescope-Adapter (optical height: 1 mm) # 2459128 plus Baader 2" Safety Kerf nosepiece with 2" filter thread # 2408156 to use it with a standard 2" focuser.

    If you have a thread at your telescope which you want to use, we'd need to know its specifications - we do not have the data of all telescopes available. If you need a special length, there are extensions available, too.
    Answer by: Baader Web Team (Admin) on Oct 5, 2020 12:36:00 PM
  128. Rated: 2
    9/3/2020 5:29 PM Baader 2" Nosepiece with 2" filter thread
    I have bought the Steeltrack for SC (Celestron Edge HD). Can I screw this nosepiece to the telescope side of the Steeltrack and by doing so use the Steeltrack on a scope with a 2" connection??? I am aware that there could be an issue with back-focus distance.

    Answer rated: 1
    A little unusual but of course you can use the diamond steeltrack with this nose piece. Only thing is that I´d prefer this nose piece instead:
    https://www.baader-planetarium.com/en/baader-2%22-safety-kerf-nosepiece-with-2%22-filter-thread.html
    The savety groove can cause a tilt - depends on the clamp. The nose piece with kerfs is without this trouble.
    Answer by: Baader Web Team (Admin) on Sep 4, 2020 10:43:00 AM
  129. Rated: 4
    9/3/2020 5:49 AM Baader FCCT (Filter Changer Camera Tilter)
    Will there be filter slides available for mounted 1.25" and 2" filters such as the f/2 highspeed filters?

    Answer rated: 0
    No, there is not enough backfocus available for a filter cell and a filter drawer.
    Answer by: Baader Web Team (Admin) on Sep 3, 2020 8:13:00 AM
  130. Rated: -2
    9/2/2020 12:44 AM 2" BDS-SC Baader Diamond Steeltrack® Focuser
    I have a BDS-SC/HD which I am using on a Meade LX-85 6" ACF with a Pentax KP camera attached via a T2 adapter. It works very well, thank you.

    My question is, will your UHC-S / L-Booster-Filter 2" fit internally in the BDS-SC/HD? If not, do you have another method to use the UHC-S filter with the setup mentioned above?

    Answer rated: 0
    To avoid obstructions in the lightpath by a 2" filter, which is smaller than the inner diameter of the focuser tube, there is no option to mount such a filter inside of the focuser.

    But you have two options:
    - The Baader 2" nosepiece to T-2 / M48 (T-2 part #16) # 2408150 has got a thread for 2" filters
    - The UFC filter drawer https://www.baader-planetarium.com/en/filters/universal-filter-changer.html is also compatible with the Diamond SteelTrack focuser. You can mount e.g. Diamond Steeltrack® M68 Adapter # 2957206 or Diamond Steeltrack® M48 Adapter # 2957204 at the SteelTrack and then configure a UFC filter drawer with M68 (for maximum aperture) or M48 connection on the telescope side and a T-2-thread on the camera side - or a wider connection for M48 or larger and one of our Wide T-rings to reduce vignetting of full-frame cameras as much as possible. A T-thread is smaller than a fullframe sensor, so that a Wide T-Ring is helpful with larger sensors.

    Answer by: Baader Web Team (Admin) on Sep 2, 2020 10:00:00 AM
  131. Rated: 1
    8/31/2020 7:39 PM Fluorite Flatfield Converter (FFC) / 3x-8x
    I have a zeiss APQ 150/1200. can I use this together with Zeiss binocular?

    Answer rated: -4
    This should work - but please remember that a binoviewer has got an optical length of about 11cm, which gives you a minimum factor of ca. 3.3x if the FFC is mounted directly in front of the binoviewer.
    This turns your telescope into a ca. 150/4000 f/26, and a 32mm eyepiece will give you a magnification of 125x.

    Please also take a look at the chart https://assets.baader-planetarium.com/media/extendware/ewimageopt/media/inline/d/1/fluorit-flatfield-converter-ffc-3x-8x-weltbeste-barlowlinse-c61.jpg which shows you how much the focus point changes.
    Answer by: Baader Web Team (Admin) on Sep 1, 2020 2:07:00 PM
  132. Rated: 1
    8/31/2020 4:27 PM 2" BDS-NT Baader Diamond Steeltrack® Focuser
    I need help choosing between # 2957210 and # 2957230

    Answer rated: 1
    It depends on the telescope you're using. BDS-RT #2957210 is for refractors, BDS-NT #2957230 is for Newtonians.
    Answer by: Baader Web Team (Admin) on Sep 1, 2020 9:23:00 AM
  133. Rated: -1
    8/30/2020 6:36 AM Baader 2" ClickLock eyepiece clamps (from T-2 to 4,1")
    I have a Celestron Edge HD 11" SCT. Is the #2956257 S57-ClickLock what I need to convert the included 2" mirror diagonal to a clicklock adapter? Thanks!

    Answer rated: -4
    We are not sure which specific star diagonal Celestron included with your telescope, but if the eyepiece clamp can be removed, it is probably with a thread. The S52 is a ring dovetail with 52mm diameter.

    Chances are good that a SC-thread is used. If you can remove the eyepiece clamp from the star diagonal and screw it onto the 2"/SC-thread on the back of your telescope, then you can use Baader 2" ClickLock SC/HD (2") clamp (C5" - C9¼") #2956220. This clamp has got a female thread; If you need a ClickLock with a male SC-thread, you can convert it with Baader 2"/2" Inverter Ring with 48mm filter thread # 1508020.

    Otherwise, we'd need to ask you to measure the thread of your specific star diagonal as described here: https://www.baader-planetarium.com/en/blog/clicklock-clamp-for-your-telescope/
    Answer by: Baader Web Team (Admin) on Sep 2, 2020 10:18:00 AM
  134. Rated: 5
    8/29/2020 6:19 PM Baader T-Ring Canon EF (EOS) to T-2
    Is it possible to replace the 42mm thread with the 48mm spacer # 2458405, so I could use this correctly with the MPCC? All your recommandations are about using the protective Canon ring but I have no real need for it since I don't use much filters. There is a question similar to mine but as an answer you refer to a graph of the MPCC which doesn't give me the answer I need... Thanks for your help!

    Answer rated: -2
    Unfortunately, the spacer ring has got a diameter of 52mm. The inset of our Canon ring has got a diameter of only 50mm.
    Answer by: Baader Web Team (Admin) on Sep 2, 2020 1:40:00 PM
  135. Rated: 0
    8/29/2020 9:53 AM Baader Z(AP)-Dove tail bar 470mm
    Will the above product fit on to my Carl Zeiss Jena equatorial mount which currently holds a C63/830 Telemator Telescope. I am looking to remove the telescope (temporarily) to enable the use of a Canon F1 camera and 600mm lens, in conjunction with the Telemator drive system.

    Answer rated: 0
    Yes - this will work
    Answer by: Baader Web Team (Admin) on Aug 31, 2020 11:51:00 AM
  136. Rated: 1
    8/28/2020 1:38 PM Baader 2" ClickLock Diagonal Mirror
    I have a Celestron CPC 925. I have just bought the Baader 2 inch Clicklock Dialectric diagonal. Your user guide says that if I unscrew the Kerf nosepiece the diagonal has two more useful connections: An SCT thread and a S58 dovetail. However, when I try to screw the diagonal body onto my SCT it will only screw on half a turn. The threads seem to be diffferent. what am I doing wrong? How do I access the SCT thread on the diagonal?

    Answer rated: 5
    You might find the manual for our star diagonals interesting, which we have at https://www.baader-planetarium.com/en/downloads/dl/file/id/1617/product/1687/baader_star_diagonals_t_2_and_2.pdf

    The SC-thread should be easily accessible by unscrewing the nosepiece. Then you should have this part in your hands: https://www.baader-planetarium.com/en/accessories/adapters-imaging-accessories/2-inch-sc-thread/baader-2%22-safety-kerf-nosepiece-with-2%22-filter-thread.html

    There are sometimes slight tolerances in the threads, so that they might not fit perfectly. Please take a look at the thread of the telescope, if there is some dirt or black colour which might block the thread. You can also try to turn the star diagonal around by removing the ClickLock as described in the manual https://www.baader-planetarium.com/en/downloads/dl/file/id/1378/product/1687/user_manual_for_baader_clicklock_diagonal_mirror_with_2_and_m68_connection.pdf on page 7.The thread is the same on both seides, but maybe one side works better.
    Answer by: Baader Web Team (Admin) on Sep 2, 2020 9:09:00 AM
  137. Rated: 1
    8/26/2020 4:15 PM 2" BDS-RT Baader Diamond Steeltrack Focuser
    Can this be used on a Zeiss APQ 150/1200? (without any modification, of course). Thanks

    Answer rated: -3
    This is possible without modification of the Zeiss telescope. But you will need an special manufactured adaptor to attach the focuser to the Zeiss telescope. This adapter costs appx. 125 EUR net plus shipping
    Answer by: Baader Web Team (Admin) on Sep 1, 2020 9:18:00 AM
  138. Rated: -2
    8/26/2020 2:58 AM Baader double-balancing plate-set with 3" plate, V-clamp and Stronghold
    Whats the max load allowed on the plate on a side by side mounting ??

    Answer rated: -3
    We would recommend a load of approximately 20kg max. ~7kg on the stronghold and ~13kg on the V-clamp
    Answer by: Baader Web Team (Admin) on Sep 2, 2020 2:04:00 PM
  139. Rated: 3
    8/25/2020 10:16 AM Fluorite Flatfield Converter (FFC) / 3x-8x
    I just bought a Flat Field converter, and I'm trying to understand the drawing, about focusing distances.
    I understood that for magnifying 4 times (as exemple), I have to set camera, or his schip, at 150mm from the FFC. this part is ok.
    but my question is for the other side. what does that mean "focus of telescope without FFC? the different distances given in the drawings, are they distance I have to put in front of the FFC? between the telescope and the FFC?
    Thanks for your help.

    Answer rated: 6
    The focus of telescope without FFC is the place where the focus of the telescope is without the FFC. Just like a any other Barlow lens, the focus point of thetelescope moves, when you insert a Balrow (or a reducer). If you can reach focus with the FFC, you can ignore this point; if you don't and have to do mechanical changes to the telescope, this information is important.
    Answer by: Baader Web Team (Admin) on Aug 25, 2020 12:02:00 PM
  140. Rated: 0
    8/23/2020 7:37 AM Baader Hyperion Universal Zoom Mark IV, 8-24mm eyepiece (1¼" / 2")
    I looked through the Q&As and found that back in 2017 someone asked if this eyepiece would work with the Pentax 65PF ED spotting scope. The company rep answer was it should since it was the standard 1.25”. However a user posted that it would not focus at infinity on several settings. Is that correct or will it work with the Pentax PF 65 ED ii? Thanks.

    Answer rated: 0
    The Hyperion Zoom Mark IV is designed in such a way, that the focus point is even more spotting-scope-friendly that with most 1.25" eyepieces, when it is used with the the included spotting-scope adapter/base plate. So, we would be surprised if if didn't work with spotting scopes which support standard 1.25" eyepieces, but we couldn't test it ourselves with this particular model yet.
    Answer by: Baader Web Team (Admin) on Aug 25, 2020 12:27:00 PM
  141. Rated: 1
    8/22/2020 12:36 AM 1.5mm Strip-Shims (Spacer) for BDS-NT
    Hi, 2 questions:
    1. How many shims do i need to fit a SW 150PDS (6")?
    2. The open space underneath the VersaBase - wouldnt light sneak through where the drawtube is?

    Answer rated: 0
    Please take a look at the drawing on page 2 of this PDF: https://www.baader-planetarium.com/de/downloads/dl/file/id/30/product/2859/bds_nt_dimensions_technical_drawing.pdf

    As tube diameters are not standardised, we can't answer this without knowing the diameter of the telescope tube.

    Light intrusion is no problem, as the focuser usually is deeper inside of the telescope than the base plate.
    Answer by: Baader Web Team (Admin) on Aug 25, 2020 1:26:00 PM
  142. Rated: 1
    8/21/2020 8:54 AM Baader double-balancing plate-set with 3" plate, V-clamp and Stronghold
    Great to know that it can be fittted on a tripod.Can a camera plate like Manfrotto with 3/8 sliding screw be fitted on the center of the plate with the anti rotation lug in one of the holes.? That way the balancing plate can be mounted of a photo video mount for complete movement with two scopes mounted

    Answer rated: 3
    Probably not without some work, but we do not know the measurements of Manfrotto.
    But you may have to remove at least the pin from the plate.
    Answer by: Baader Web Team (Admin) on Sep 9, 2020 1:56:00 PM
  143. Rated: -1
    8/20/2020 8:55 AM Baader 24mm Hyperion 68° Eyepiece - Non Variable
    I am looking at the Hyperion range eyepieces. Will these be compatible for the Orion 10" f/3.9 Newtonian Astrograph Reflector Telescope?

    Answer rated: 6
    You can use them on any telescope with 1.25" or 2" eyepiece clamp. However, on such a fast telescope, we'd highly recommend the use of a coma corrector like the MPCC in its version for visual and photographic use: https://www.baader-planetarium.com/en/2%22-mpcc-mark-iii-(multi-purpose-coma-corrector-for-newtons).html#574=926 Otherwise, the eyepiece will show the coma of the telescope.

    In the manual of the MPCC in the download section of its product site, we describe the recommended distances for eyepieces.
    Answer by: Baader Web Team (Admin) on Aug 20, 2020 9:03:00 AM
  144. Rated: 0
    8/19/2020 12:56 PM Baader 2"/90° Astro Amici-Prism with BBHS ® coating
    I want to be sure that the Baader 2"/90° Astro Amici-Prism with BBHS ® coating is compatible with all the eyepieces : I have a set of televue ethos and I want to check that the ethos will not bottom the prism inside.

    Answer rated: 2
    Eyepieces with 2" barrels of up to ca. 45mm length can be used without problems. If an additional 1.25" nosepiece is in front of the 2" nosepiece, you can use any 2"/1.25" reducer to be safe, or use our Pushfix #2408151 to expand the 1.25" barrel permanently to 2".
    Answer by: Baader Web Team (Admin) on Aug 19, 2020 1:29:00 PM
  145. Rated: 4
    8/18/2020 10:11 AM Baader UV/IR Cut / L-Filter
    Can the giant option (101x143x3mm) be used with typical 4x5.65" matte box?

    Answer rated: 5
    Yes this works!
    Answer by: Baader Web Team (Admin) on Aug 18, 2020 3:24:00 PM
  146. Rated: 4
    8/18/2020 8:35 AM Baader UFC (Universal Filter Changer)
    Is this slider compatible with baader highspeed 2" mounted filters? Can`t find exact height figure for them.

    Also, I have 6,5 backfocus camera, what additional spacers would I need for slider with RASA 8? And is use of dedicated Adapter is obligatory in this case, or T2 female part on telescope side will do the job?

    Answer rated: -3
    The highspeed-filters have the Low-Profile Filter Cell with 6mm height, as most of our current filters, and fit into the UFC filter chamber.

    For the RASA 8, you need
    - Baader UFC S70 RASA 8" Telescope-Adapter (optical height: 1.4 mm) # 2459136
    - Baader UFC Base (Filter Chamber) telescope-sided S70 dovetail receptor (optical height: 13 mm) # 2459110
    - Baader UFC T-2 (m) Camera-Adapter (optical height: 2 mm) # 2459115
    The camera adapter depends on the camera you want to use. If T-2 is wide enough so that it doesn't cause vignetting, you can use T-2 without problems.

    The length of this setup is 16.4mm, so the remaining backfocus of the RASA 8 is 12.6mm. To bridge this gap, you can combine several adapters, e.g.
    - Baader UFC S70 Extension 5mm # 2459141
    - Baader T-2 / 7.5 mm Extension Tube (T-2 part #25C) # 1508155

    This gives you 12.5mm and is within the tolerances of the RASA 8. We also have T-2 Fine-Adjustment rings (0,3 / 0,5 / 1 mm) - Aluminium #2457910 (also available seperately)
    Answer by: Baader Web Team (Admin) on Aug 18, 2020 10:24:00 AM
  147. Rated: 1
    8/17/2020 8:25 AM Baader Wide-T-Ring Nikon Z (for Nikon Z bajonet) with D52i to T-2 and S52
    I have a Nikon Z7, what do i need to attach this to a Celestron Edge HD 9.25

    Answer rated: -4
    We recommend
    - Celestron 48mm T-Adapter for EdgeHD 9.25”, 11”, and 14”, Item #: 93622
    - Baader Wide-T-Ring Nikon Z (for Nikon Z bajonet) with D52i to T-2 and S52 # 2408335
    - Baader Reducing piece S52 / M48 # 2958552
    The Celestron 48mm adapter has got a backfocus of 55mm; our Wide T-ring is 8.3mm thick, and the Nikon has got a flange distance of 16 mm. So, you still need an M48-extension of 30.7mm. Currently, we have got M48 Fine-Adjustment rings seperately or as set (0,3 / 0,5 / 1 mm) - # 2457915, but you'd need to get a 30mm-extension from another manufacturer.

    We could either offer you a T-2-adaptation (but there would be vignetting with a full frame sensor, so it is not recommended), or use the space for our UFC filter changer. It would fit in this gap with M48-connections, but it is of course more expensive than a simple extension tube.
    Answer by: Baader Web Team (Admin) on Aug 18, 2020 10:50:00 AM
  148. Rated: 3
    8/16/2020 10:15 PM Baader Ultra-Narrowband H-alpha 3,5nm Filter
    Can you share actual transmission characteristics? Does this filter allows NII wavelength to pass?

    Answer rated: 0
    This filter is fully blocked from 390 to 1150 nm. It will not pass N II.
    Answer by: Baader Web Team (Admin) on Aug 18, 2020 12:34:00 PM
  149. Rated: 3
    8/16/2020 1:48 PM Baader MaxBright® II Binoviewer with case
    I have a Bresser AR127L telescope, I just went ahead a minute again and bought a MaxBright II binoviewer without accessories. So from a newbie question here, what other accessories and eye piece do I need to set it up on my Bresser telescope. Can I use a 2” eye piece as well instead of the 1,25”?. Sorry, am clueless on Binoviewer.

    Answer rated: -1
    Please take a look at the manual of the MaxBright binoviewer, where most of your questions are answered. It is in the download section of the proct website. Take a special look at the section about how to determine the back focus of your telescope, which tells you if you need a glasspath corrector to reach focus, anf if you can use your existing star diagonal or if it is too long. This determines if you need a 1.25" T-2 nosepiece, or if you need a very short star diagonal with T-2-threads instead of a long eyepiece clamp.

    You can only use 1.25" eyepieces, although our Hyperion Aspheric 2" eyepieces come with adapter so that they can be used as 1.25" eyepieces - if there is sufficient back focus.

    We always recommend to measure your available backfocus first (with your existing star diagonal, but if possible also without it), so that the necessay adaption can be found - often, there are cheaper sets availableht an if you have to buy every item seperately.
    Answer by: Baader Web Team (Admin) on Aug 17, 2020 2:05:00 PM
  150. Rated: 1
    8/15/2020 9:51 PM Baader 2"/90° Astro Amici-Prism with BBHS ® coating
    I have treated myself to this Baader Amici Prism!! However - I am now concerned with reading reports from online astronomy forums regarding this prism sometimes causing a 'roofline diffraction spike' in the eyepiece image. Will this happen to me?? I will only use the prism for visual astronomy, not photography. Focal Ratio of my telescope = F10, focal length = 2800 mm. Celestron CPC1100. Most of my viewing will be in the 100X to 250X magnification range. Thanks for any reassurance you can give me! PS I love your products!!

    Answer rated: 1
    This can happen sometimes - "sometimes" is, when you observe a very bright object and place it directly onto the roof edge. If you move it a little bit of center, it is no problem - please try it out!
    This is typical for all Amici (rrof) prisms, similar to the spikes of a Newtonian telescope, but much weaker.
    Answer by: Baader Web Team (Admin) on Aug 18, 2020 11:13:00 AM
  151. Rated: 5
    8/15/2020 8:22 AM Baader Stronghold Tangent Assembly
    The clamp provided on top is for vixen universal plate correct also.called EQ? I believe with the top two peice clamp removed the Baader vario with the supplied base plate can be directly attached to the tangent. Please confirm..

    Answer rated: -2
    Yes, it is for EQ(V) style prism clamps - that is Vixen-style, which is also used by the smaller SkyWatcher EQ mounts.
    Answer by: Baader Web Team (Admin) on Aug 18, 2020 11:09:00 AM
  152. Rated: 4
    8/12/2020 8:30 PM Hyperion Zoom 2.25x Barlow lens
    I tried to use this Barlow attached to the Hyperion zoom Mark IV but I found that I could not bring planets into focus. My telescope is a Televue Pronto of 480 mm. Is there some other attachment that I need to bring planets into focus?

    Answer rated: 4
    It depends on why you don´t come into focus. If you need to focus further out, you can use for example 2" extension https://www.baader-planetarium.com/en/2%22-deluxe-eyepiece-clamp-for-sc-telescopes-(available-with-filter-holder--extension).html
    If you need to go further in, you can only replace the 2" Diagonal that you most likely use, with an 1,25" version to have a shorter lightpath
    Answer by: Baader Web Team (Admin) on Aug 13, 2020 9:09:00 AM
  153. Rated: 0
    8/10/2020 6:03 AM Classic Ortho 18mm, 1¼" Eyepiece (HT-MC)
    Can this be adapted to Celestron Ultima 80 spotting scope?

    Answer rated: 0
    This can be done as described in this German-language PDF: https://www.celestron.de/ce_de/downloads/dl/file/id/938/product/3323/ultima_und_classic_okulare.pdf

    You need to remove the 1.25" nosepiece and screw the eyepiece into Baader 2" NX4 (C90) / ETX Expanding Ring # 2958500A which fits directly onto the thread of the Ultima. This works for the three Classic Ortho eyepieces and for most other eyepieces where you can remove the nosepiece and access a male 1.25" filter thread (i.e., where you can turn the nosepiece around).

    It is uncomfortable with the short 6mm Classic Ortho, but it works.
    Answer by: Baader Web Team (Admin) on Aug 17, 2020 1:24:00 PM
  154. Rated: 0
    8/10/2020 5:33 AM Baader 10mm Hyperion 68° Modular Eyepiece
    Can the Baader 10mm Hyperion 68° Modular Eyepiece be adapted to a Celestron Ultima 80 spotting scope?

    Answer rated: -1
    No, the Ultima spotting scopes don't support eyepieces with 1.25" nosepiece. Only the Hyperion 8-24mm Zoom can be adapted - there, you can remove the nosepiece and screw it into the Ultima spotting scope. This is not possible with fixed-focus Hyperion eyepieces.
    Answer by: Baader Web Team (Admin) on Aug 17, 2020 1:21:00 PM
  155. Rated: 1
    8/4/2020 1:33 AM Baader 2" ClickLock eyepiece clamps (from T-2 to 4,1")
    I have a Explorer Scientific ED127 with 2" focuser.I am looking for a Baader Click-Lock adapter. Which one should i order?

    Answer rated: -1
    You should need the 2" ClickLock M54i x 0,75 (Bresser / Omegon / Explore Scientific) #2956253
    https://www.baader-planetarium.com/en/accessories/adapters-imaging-accessories/eyepiece-clamps/baader-2%22-clicklock-eyepiece-clamps.html#574=1224
    Answer by: Baader Web Team (Admin) on Aug 4, 2020 9:06:00 AM
  156. Rated: 3
    8/3/2020 2:36 PM Baader IR-Pass Filter (685 nm)
    Do you have a transmission diagram for your ir-pass filter. I found one from one of your suppliers but do not know if this is relevant or there have been changes. Above all, I want to ensure the damping up to 300nm.

    https://astro.astrosweden.se/sv/articles/2.232.241/baader-planetarium-baader-planetarium-ir-passfilter-685-nm

    Answer rated: -2
    We don't have a transmission diagram for this filter ourselves currently. The base of the filter is a Schott-equivalent absoption glass RG 630 (you can look up its properties in the Schott catalogue). For this reason it is assured that blocking is effective down to 300 nm.
    Answer by: Baader Web Team (Admin) on Aug 4, 2020 3:22:00 PM
  157. Rated: 0
    8/2/2020 10:49 PM Universal Alan Gee II - Telecompressor (UAG II)
    I am interested in purchasing the Universal Alan Gee and the MaxBright II Binoviewer for my Celestron 9.25 evolution, which has a 1.25" star diagonal. Are there any other components I would need to make this setup work?

    Answer rated: 1
    You can find example assemblies in this PDF: https://www.baader-planetarium.com/en/downloads/dl/file/id/1612/product/4550/universal_alan_gee_ii_uag_ii.pdf

    The 7.5m T-2 extension #2 mentioned on the left side of the PDF is included in the scope of delivery of the UAG, so you can screw the UAG between any binoviewer with T-2-thread like the MaxBright II or the old MaxBright and any of our T-2 star diagonals.

    If you have a standard 1.25" star diagonal without T-thread, this will not work to your satisfaction, as these star diagonals do have a longer optical length and no thread for attaching the binoviewer. We recommend a T-2 prism diagonal (they have the shortest optical length) plus the BTA-adapter for Schmidt-Cassegrains # 2408160, which can be screwed onto the back of your telescope, or a 2"/T-2 nose piece #2408150, if you have a 2" eyepiece holder on the back of your telescope.
    Answer by: Baader Web Team (Admin) on Aug 3, 2020 10:36:00 PM
  158. Rated: -2
    7/31/2020 4:18 PM Baader zero-tolerance protective Canon DSLR T-Ring T-2/M48 and 2"
    Any chance you will be making one of these adapters that will work with the Canon EOS M (EF-M Bayonet)? A few competitors of yours have EOS M to T-2 adapters but having one of these that would fit an EF-M Bayonet with a 2" filter in front that can also connect to your UFC system would be amazing.

    Answer rated: 1
    EOS-M cameras are not common in Astrophotography. We would need to produce thousands of adaptors at once in mass production to make it happen, but unfortunately there is no demand for such an adaptor, your inquiry was the first ever.
    Answer by: Baader Web Team (Admin) on Jul 31, 2020 4:48:00 PM
  159. Rated: -1
    7/29/2020 10:04 PM Baader Sky Surfer V (Night & Day Design) Red-Dot-Finder
    Do you have a bracket to mount the Sky Surfer V to the top flat surface of my OTA rings, similar to the standard base, but flat on the bottom?

    Answer rated: -1
    Please note - the standard base has a sine-curve shaped bottom and does fit diameters from 4" to infinity. Means - it will sit snuggly on a flat surface.

    Several makers have copied the design - but did not understand the reason for the bottom shape - hence their copies wiggle, when fastened onto a flat surface.
    Answer by: Baader Web Team (Admin) on Jul 30, 2020 8:35:00 AM
  160. Rated: 0
    7/29/2020 7:34 AM Baader Wide-T-Ring Nikon Z (for Nikon Z bajonet) with D52i to T-2 and S52
    So the Z6 to Wide-T-Ring to Baader filter drawer to T-ring for F mount Nikkor 70-200 f 2.8 lens. I want to slide a 2'' Optolong L-Pro filters
    What part number do I need from baader to make that happen?

    Answer rated: 0
    You need
    1x Baader UFC Straylight-Flange # 2459121
    1x Baader UFC Base (Filter Chamber) telescope-sided S70 dovetail receptor (optical height: 13 mm) # 2459110
    As many Baader UFC 2" (M48) Filter Slider # 2459112 as you have filters
    1x Baader UFC S70 / SP54 (m) Telescope-Adapter (optical height: 1 mm) # 2459134
    You also need the matching DT-rings https://www.baader-planetarium.com/en/accessories/adapters-imaging-accessories/camera-adapters/dt-rings.html to adapt from SP54 to the filter thread of your lens. I do believe that the Nikkor uses 77mm filters, but you should check the manual. For 77mm, you need two rings:
    1x Baader Hyperion DT-Ring SP54/M62 for DTAdapter II&III and Hyperion Eyepieces # 2958062
    1x Baader Hyperion Stepper-Ring M62 onto M77 # 2958077

    Please note that the 2" filter is much smaller than your camera lens and will cause some vignetting.
    Answer by: Baader Web Team (Admin) on Jul 29, 2020 8:22:00 AM
  161. Rated: 0
    7/28/2020 8:49 PM Baader FlipMirror II Star Diagonal
    What attachment would I need, to be able to screw the flip mirror directly to a Celestron CPC 1100? Also for a Celestron 8” Evolution.

    Answer rated: 0
    At the moment, we do not have an adapter from SC to M48, so you have to use T-2 and the 2" SCthread, which is standard on the C8 and one of the two threads of the C11 (it's the one where the 1.25" visual back is attached).
    You need
    Baader SC / HD Ultra Short T-Adaptor, 7mm optical length # 2958500B
    to attach it to the T-2-thread of the FlipMirror.
    Answer by: Baader Web Team (Admin) on Jul 29, 2020 9:13:00 AM
  162. Rated: 0
    7/28/2020 5:00 PM Baader MaxBright® II Sets
    What Glasspathcorrector would I require for my Altair Astro 152 v3 achromatic refractor and my skywatcher 127 Mak, would I require a different one for each or would one cover both.

    Answer rated: 1
    For Mak and SCT, we recommend
    Glasspathcorrector 1:1,25 for Baader-Binoviewer with T-2 thread (MaxBright® II and MaxBright®) # 2456314
    or
    Glasspathcorrector 1:1,25 for Baader-Binoviewer with Zeiss ring dovetail (MaxBright® II and Mark V) # 2456314Z
    depending on whether you use the bino with Zeiss dovetail or T-2-connection (the optics are the same, only the body is different.

    For the lens telescope, you'd have to measure the available backfocus. We have an extensive description of chosing the right GPC e.g. in the manual of the MaxBright II at https://www.baader-planetarium.com/en/downloads/dl/file/id/1614/product/4317/manual_baader_maxbrightr_ii_binoviewer.pdf on page 20
    Answer by: Baader Web Team (Admin) on Jul 29, 2020 8:17:00 AM
  163. Rated: 2
    7/27/2020 8:15 PM Baader Micro Guide eyepiece with Log-Pot illuminator
    My batteries have become depleted and they didn't have any markings or designations, so I tried the LR44 batteries recommended on your website, but they're too large, please could you make another recommendation for my Micro-Guide eyepiece. Thanks in advance stephen

    Answer rated: -2
    For the Log Pot you need 2 X SR41 # 2454305B Battery
    Answer by: Baader Web Team (Admin) on Jul 30, 2020 3:17:00 PM
  164. Rated: 0
    7/27/2020 6:20 PM Baader 2" Amici-erecting-prism 90° with 2" holder and 2" sleeve
    For the prism 2956152 it states that it isn't for high magnification. On an American website however, High Point Scientific, for this model it states that "Correct image diagonals have been used traditionally for terrestrial viewing, and limited to low (under 100X) magnifications. The high quality of this diagonal lets you use much higher magnifications without aberrations or image breakdown". Would this information be incorrect? Many thanks

    Answer rated: 2
    For highest magnifications, we offer Baader 2"/90° Astro Amici-Prism with BBHS ® coating # 2456120 which is made for highest magnifications.

    #2956152 instead is a high-quality Amici prism and better that many prisms which are included in telescopes, but it is not made for highest magnifications.
    Answer by: Baader Web Team (Admin) on Jul 28, 2020 11:25:00 AM
  165. Rated: -4
    7/27/2020 3:16 PM Hyperion Zoom 2.25x Barlow lens
    Will this Barlow fit the space between the Hyperion Zoom and the 2" ClickLock Mirror Diagonal when the zoom lens has been directly connected to the diagonal with the 2i to 2a change ring?

    Answer rated: 2
    No, this would be too long to fit.
    Answer by: Baader Web Team (Admin) on Jul 28, 2020 11:21:00 AM
  166. Rated: 0
    7/27/2020 3:43 AM Baader Hyperion Universal Zoom Mark IV, 8-24mm eyepiece (1¼" / 2")
    Could someone here please tell me what do I need to buy to be able to connect my Canon EOS M6 Mark II to the Baader Hyperion Universal Zoom Mark IV, 8-24mm, which is connected to my Celestron nextstar 8se?

    I already have the Vivitar T-Mount to Canon EF-M Mount Adapter per bhphotovideo advice and it doesn’t work.

    Thank you so much!
    Ciprian

    Answer rated: 0
    You can find all possible camera adaptations in this PDF:
    Digiscoping - camera adaptations for afocal photography and eyepiece projection
    https://www.baader-planetarium.com/en/downloads/dl/file/id/444/product/1210/digiscoping_camera_adaptations_for_afocal_photography_and_eyepiece_projection.pdf

    For a full frame camera, you need
    Hyperion / Morpheus® T-Adapter M43i/T-2a (M42x0.75) # 2958080
    https://www.baader-planetarium.com/en/baader-hyperion-t-adapter-m43i--t-2a-%28m42x0.75%29.html
    and
    Baader T-2 / 40 mm Extension Tube (T-2 part #25B) # 1508153
    https://www.baader-planetarium.com/en/accessories/adapters-imaging-accessories/astro-t2-system/baader-t-2--40-mm-extension-tube-%28t-2-part-25b%29.html

    Plus the T-ring for your camera, which you already have.

    For APS-C, a 30mm-extension is sufficient
    Answer by: Baader Web Team (Admin) on Jul 28, 2020 9:17:00 AM
  167. Rated: 0
    7/26/2020 10:37 PM Baader Standard Base - for MQR III&IV, for Witty One & for V-Bracket
    I am trying to mount a set of finder rings (Stellarvue R050DA which fits Synta base) to an Astro-Physics 130mm Starfire GTX. I am having trouble finding a finder base that will fit the screw spacing (approx. 35mm) and tube diameter (approx 130mm) for this telescope. The Baader Standard Finder Base looks like it might work but I have been unable to locate any dimensions that would verify it. Would you happen to have a sketch with dimensions for this base?

    Answer rated: 0
    The long holes are each 7x15mm wide, the minimum distance between them (the length of the metal between them) is 20mm.
    The central hole has got a diameter of 5mm.
    Answer by: Baader Web Team (Admin) on Jul 29, 2020 9:43:00 AM
  168. Rated: -1
    7/26/2020 10:10 PM Baader T-2 BBHS ® Mirror Diagonal
    I recently purchased one of your star diagonals. It is the T-2 BBHS Star Diagonal #2456103. I have read on your website that the optical path length is 43mm. However, I do not know the reference points for that measurement. For my star diagonal, do you have a diagram similar to the one in the link below? https://www.baader-planetarium.com/en/blog/optical-tube-lengths-of-2-clicklock-and-bbhs-mirror-diagonals/
    Or, can you please describe to me where the optical path begins and ends on the diagonal body?
    I need this information so I can accurately determine and measure backfocus distance.
    Thank you,
    John L

    Answer rated: 2
    The optical length is the length which it adds to the light path. In this case, the threads do not contribute because the "dissappear" when you place the star diagonal between two T-threads.

    The optical length is not always identical to the mechanical length, because the lenses in some parts change the focus point. It gives always the movement of the focus point when the part is used as intended.
    Answer by: Baader Web Team (Admin) on Jul 28, 2020 10:27:00 AM
  169. Rated: -2
    7/26/2020 10:08 AM Baader heavy-duty 8" double mounting plate, for up to 100kg
    Is this plate compatible with the 10 Micron clamps ie if you have two 10 Micron maxi clamps is the hole spacing on this plate compatible?
    Simon

    Answer rated: -1
    The 8" double-mounting plate is predrilled for the 8" Planewave Clamp as well as for Baader PanEQ clamps, it is not compatible for the 10Micron Maxi clamps by default.
    We could add this drillings by request, but these holes would not be black anodized like the rest of the plate, furthermore it would only be possible at the very edge of the plate and not be moveable. Also, since this would be a custom producion, it would take approximitaly four weeks.
    Answer by: Baader Web Team (Admin) on Jul 27, 2020 1:37:00 PM
  170. Rated: 3
    7/24/2020 7:50 PM 2" MPCC Mark III (Multi-Purpose Coma Corrector for Newtons)
    I have just purchased the Orion 10" f/3.9 Newtonian Astrograph Reflector Telescope. Can you advise if the 2" MPCC Mark III (Multi-Purpose Coma Corrector for Newtons) is compatible. I will be fitting it to a cannon 400d camera.

    Appreciate your help.

    Many thanks
    Pete

    Answer rated: -1
    If it is a true Newtonian without any additional correctors integrated, yes, the MPCC should work fine.
    We recommend the
    Baader zero-tolerance protective Canon DSLR T-Ring T-2/M48 and 2" w. clear glass filter (as protection against dust) #2958550C
    plus
    Baader M48 Spacer Ring for MPCC III / Protective EOS T-Ring # 2458405
    to attach the camera and use the laergest possible diameter.
    Answer by: Baader Web Team (Admin) on Jul 28, 2020 9:39:00 AM
  171. Rated: 1
    7/22/2020 4:38 PM 1¼" / M41 Eyepiece-Adapter for Kowa TSN 770 / 880 Spotting Scopes
    Hi. I would like to know if the Baader astro adapter for Kowa 883 allows infinity focus with the Hyperion and Morpheus 5 and 4.5 mm eyepieces. Thank you very much

    Answer rated: 0
    Yes, it works e.g. with our eyepieces Morpheus 76°, Hyperion Zoom, Hyperion 68° and Classic-Ortho
    Answer by: Baader Web Team (Admin) on Jul 23, 2020 10:34:00 AM
  172. Rated: 1
    7/21/2020 3:09 PM Baader 2" NexStar locking ring.
    Is there a reason this wouldn't be suitable for use on a 6" SCT?

    Answer rated: 0
    The focussing knob on the telescope is too close to the SC-thread, so there isn't enough room for the locking ring. So, it doesn't fit mechanically.
    Answer by: Baader Web Team (Admin) on Jul 22, 2020 8:05:00 AM
  173. Rated: 0
    7/21/2020 8:29 AM 2" BDS-RT Baader Diamond Steeltrack Focuser
    Which Adaptor do I need for the BDS-RT to fit my SW ED100 scope?

    Answer rated: -2
    There are countless telescopes on the marked so please see if the inner diameter of your tube is 97mm Most supposingly this adapter should fit well according your question:

    https://www.baader-planetarium.com/en/rt-adapter-%C3%B8-97mm-diamond-steeltrackr-(synta--celestron).html?___from_store=de

    https://assets.baader-planetarium.com/media/extendware/ewimageopt/media/inline/7d/1/rt-adapter-97mm-diamond-steeltrack-synta-celestron-9fa.jpg

    Answer by: Baader Web Team (Admin) on Jul 21, 2020 11:47:00 AM
  174. Rated: 1
    7/18/2020 8:27 PM BDSF: OD 3.8 Baader Digital Solar Filter (80mm - 280mm)
    I have a Canon 600mm f/4 IS lens with a cap that has an outer diameter of 184mm/7.25 inches do you have a BDSF: OD 3.8 Baader Digital Solar Filter that will fit?

    Answer rated: 2
    We have a Baader Solar Filter that fits your device. Please check out our ASTF 160mm Solar Filter:
    https://www.baader-planetarium.com/en/solar-observation/baader-solar-filter/astf-astrosolar-telescope-filter-od-5.0-(80mm---280mm).html#425=867

    Please note that we recommended the Filter with AstroSolar Safety Film OD 5.0
    The Baader Digital Solar Filter OD 3.8 is only recommended eyepiece Projection (afocal photography) and lucky imaging with video cameras. We explain the differences in details in the first FAQ on our AstroSolar website. Read more here:

    https://astrosolar.com/en/faqs/
    Answer by: Baader Web Team (Admin) on Jul 20, 2020 9:23:00 AM
  175. Rated: -1
    7/17/2020 10:23 PM Baader 2" ClickLock M54a x 0.75 clamp (TS-Optics / SkyWatcher)
    I bought this for a Skywatcher 8" Quattro Newtonian Telescope. It screws into the focuser but the threads are very very loose. Is this the correct Clicklock for my telescope ?

    Answer rated: -1
    You´ll need the ClickLock #2956254 not the 2956253 which you bought. The 2956254 is made with a M54x1 male thread with a diameter of 54,3mm because the the focuser is made with a M54,5x1 thread. This will match fine for you.


    Answer by: Baader Web Team (Admin) on Jul 20, 2020 9:39:00 AM
  176. Rated: -1
    7/15/2020 9:26 PM Baader Wide-T-Ring Nikon Z (for Nikon Z bajonet) with D52i to T-2 and S52
    I don't think I received the right answer to my question on connecting a Nikon Z6 to a Celestron EdgeHD 8.

    According to Celestron, the back focus distance for the EdgeHD 8" is 133.3mm.

    The Nikon Z series has got a flange distance of 16mm, the Wide T-ring is 8.3mm long, so in total its 24.3mm. The Celestron t-adapter is 50mm long for a total of 74.3mm.

    Your answer said I needed 30.7mm of distance, but don't I still need 59mm of distance (133.3 - 16 - 8.3 - 50 = 59)?

    Answer rated: -2
    Maybe the mistake is that there are twi different T-Adapters so please see this two links (sorry only german):

    https://www.celestron.de/ce_de/t-adapter-f%C3%BCr-edgehd-8.html
    https://www.celestron.de/ce_de/t-adapter-(c5-6-8-9-14-11-14).html

    The EdgeHD T-Adapter #93644 is 78,3mm long and needs an extension of 30,7mm that it fits your camer/bayonet ring.
    The T-Adapter #93633-A (second link) is 50mm long and could be used too. Just keep in mind that you need then of course
    different distance rings/extensions.
    Answer by: Baader Web Team (Admin) on Jul 16, 2020 9:36:00 AM
  177. Rated: -6
    7/14/2020 6:15 PM Baader Wide-T-Ring Nikon Z (for Nikon Z bajonet) with D52i to T-2 and S52
    I am connecting my Nikon Z6 to my Celestron 8EdgeHD. I already have the T-Adapter (Celestron part #93644). Do I just need this T-ring (part #2408335)?

    Answer rated: -3
    The Celestron T-adapter is designed for a flange focal distance of 55mm.
    The Nikon Z series has got a flange distance of 16mm, the Wide T-ring is 8.3mm long, so in total its 24.3mm, and you need an additional spacer with 30.7mm.

    This can be done either with 2x Baader T-2 / 15 mm Extension Tube (T-2 part #25A) # 1508154 plus some T-2 Fine-Adjustment rings (0,3 / 0,5 / 1 mm) - set #2457910, also available seperately. The distance should be matched by +/- 0.5mm for the EdgeHD.

    You can also use 1x Baader VariLock 46, lockable T-2 ExtensionTube 29-46mm with spanner tool (T-2 part #25V) # 2956946 to set the right distance.
    Answer by: Baader Web Team (Admin) on Jul 15, 2020 8:38:00 AM
  178. Rated: 0
    7/14/2020 10:17 AM VIP 2x modular barlow lens, visual and photographic
    Hello: I just buy a baader vip Barlow. I have used it with 1,25” connection (in scope and camera). Results are perfect. Congrats for the product
    I would like to use now in a 2” scope and in a reflex camera and I don’t know how to do it.
    Is there any schematic to see the way to do it.
    On the other hand, I would like to know the explanation about modules of the Barlow. On instructions included in the box, I don’t have in a clear way utilities of each module.
    Thank you in advance for your help

    Answer rated: -2
    To use the Barlow in a 2" focuser, you can use any 2"/1.25"-adapter like Baader 2" to 1¼" ClickLock Reducer (T-2 part #15B) # 2956214.
    The magnification of the Barlow depends on the distance to camera sensor or field stop of the eyepiece. We have described it in the PDF https://www.baader-planetarium.com/en/downloads/dl/file/id/240/product/1062/calculating_different_magnifications_with_the_vip_barlow.pdf which you can also find in the download-section ot the product website.
    A standard T-ring gives you a distance of 55mm with a classical DSLR. You can screw the Barlow directly or with the included 15mm T-2 extension onto the T-ring of your camera.
    Answer by: Baader Web Team (Admin) on Jul 15, 2020 9:03:00 AM
  179. Rated: -1
    7/12/2020 6:03 PM Baader Hyperion 68° Eyepiece Set (Starter)
    I've got three eyepieces with FL 5, 8 and 13. I used to view with my 2" Focuser and that was great.
    Now I'm trying to view with 1.25" focuser/barrel but I've mixed them up. Is there a way to identify which barrel belongs to which eyepiece?. The three 1.25" barrels have the same height but I could notice different lens diameter.

    https://www.baader-planetarium.com/en/downloads/dl/file/id/92/product/1208/hyperion_eyepieces_technical_data.pdf

    Answer rated: 5
    The smaller lenses belong to the eyepieces with the smaller focal lengths. The 5mm eyepiece e.g. has got a front lens with ca. 7mm diameter.
    Answer by: Baader Web Team (Admin) on Jul 13, 2020 9:38:00 AM
  180. Rated: 0
    7/11/2020 11:55 PM Alan Gee Telecompressor Mark II (T-2 part #20)
    The telecompressor slides into the baffle of my Celestron 8SE SCT but is not secure and slides out. I use a 2" Baader Click-Lock and a 2" nose piece that attaches to my OAG. There is nothing securing the telecompressor inside the baffle. How can I make sure it does not slide out?

    Answer rated: 2
    This is tricky as the Alan Gee is meant to be held in place by a T-thread.

    If you have got one of our 2" star diagonals, you can attach it as described on page 7 of the manual, with
    Baader Expansion Ring 2"a/T-2i with 1mm optical path length (T-2 part #28) # 2958242
    and
    Baader 2" / T-2 Nose Piece and Camera adapter (T-2 part #16) # 2408150

    It should also be possible to remove he Clicklock, clamp the UAG in the telescope with Baader Reducing-Ring 2"i / T-2a, with 1.5mm optical length
    # 2958244 or Baader T Adapter (BTA) for SC and MAK Telescopes (T-2 part #21) # 2408160 and expand the thread again to SC for the Clicklock with 2"a / T-2i Zero-length reducing piece (zero optical length) # 2454833 - but please always remember that the reducing factor depends on the distance between the Alan Gee and the eyepiece.
    Answer by: Baader Web Team (Admin) on Jul 13, 2020 3:04:00 PM
  181. Rated: 0
    7/11/2020 12:04 AM Alan Gee Telecompressor Mark II (T-2 part #20)
    I am thinking of buying an Alan Gee MkII, I am mostly confused as its visual use and which diagonals to use with it. I have a 9.25 SCT (non-HD). Is is only recommended to use with 2" diagonals or can I use it with the smaller T2 diagonals such as the T2 BBHS Zeiss prism? I was thinking of using that with the #16 T2 2" nose piece holding the Alan Gee and the T2 1.25 with diopter adjustment #8. I would be using the Baader Hyperion aspheric with 1.25 nose piece as well as other Hyperion eyepieces with 1.25 nose pieces. Would the combination of the aforementioned be best? I only have been thinking about using the prism because I want to get the widest and brightest view possible visually, and I also want to use the diagonal for the future purchase of binoviewers. I also don't want to by another 2" diagonal especially the click lock as I already have a Celestron twist-lock 2" diagonal.

    Answer rated: 1
    You can use it as well with T-2 star diagonals, but you may have to use some T-2-extensions to reach the desired factor, as it depends on the distance between Alan Gee and eyepiece.

    If you are interested in visual use, we'd recommend instead the Universal Alan Gee II - Telecompressor (UAG II) # 2454405. This contains the same optics as the Alan Gee, but it is preconfigured for easy use with a T-2-prism and a binoviewer or an T-2 eyepiece clamp as shown in the manual at https://www.baader-planetarium.com/en/universal-alan-gee-ii-telecompressor-uag-ii.html You just need to screw it to the back of your telescope, or insert it into a 2" eyepieceholder, if available.
    Answer by: Baader Web Team (Admin) on Jul 13, 2020 3:37:00 PM
  182. Rated: 1
    7/10/2020 8:09 PM Baader zero-tolerance protective Canon DSLR T-Ring T-2/M48 and 2"
    Looking at the Protective T-Ring with filter chamber, it does not look like there is much room to grip and thread in a 2" threaded filter. Is there some tool available to insert and remove the filters like the pin type face wrench? If not how does someone insert and remove a 2" filter without touching the lens in such a small space?

    Also, now that there are five different Canon EOS R camera models released, do you have any plans to make a version of this Protective T-ring with filter chamber that can directly connect to the Canon R Bayonet?

    Answer rated: -2
    There is no special tool. Most filters don't have a completely smooth filter cell, but provide some kind of grip, which is enough so screw them into the filter thread and to remove them again - you don't have to screw them in with force, just hand-tight. Usually, this thread is used to permanently mount 2"-filters in the T-ring. If you want to change the filter on a regular bases, you better use the 2" filter thread in the nosepiece.

    At the moment, we are not working on a Protective T-ring for other cameras, but all our nosepieces (for Wide T-rings as well as for standard T-rings or SC-thread) do have a 2" filter thread, so you can mount a 2" filter permanently in the nosepiece and protect it with the included dust-caps of the nosepiece, when it is not in use, without removing the filter.
    Answer by: Baader Web Team (Admin) on Jul 13, 2020 2:51:00 PM
  183. Rated: 1
    7/10/2020 8:02 PM Baader zero-tolerance protective Canon DSLR T-Ring T-2/M48 and 2"
    In another question you answered that the optical length of the Protective T-ring with filter chamber is actually 11,8mm and not the 12mm listed in the product specifications. Which value is correct?

    Also, when using the Protective T-ring on a classic Canon EOS DSLR (44mm optical length) or with a new mirror-less Cannon R with their EF-EOS R adapter (20mm + 24mm optical length), this would put the total optical length at 55,8mm or 56mm.

    Considering a Baader 2mm filter, we would then want to add 0,6mm to the total optical length to compensate for the extra focal length caused by refraction through the filter. This would then mean the proper optical length should be 55,6mm with a filter installed.

    Based on the stated 11,8mm or 12mm optical length, that means the optical length would include an extra 0,2mm or 0,4mm in optical length respectively.

    Will this difference in optical length have an impact? I ask because in another question I asked about the UFC system you suggested fine tuning spacers to get to exactly 55,6mm optical length when using the UFC system with a 2mm filter.

    Answer rated: 2
    11.8mm should be correct, although this is already in a region where the production tolerances of all parts in your setup add up.

    If this is a problem depends on the f-ratio of your telescope. Fast systems have got only a very small region where the image is sharp, while slower optics are sharp over a larger distance. Also, many optical acessories work with some tolerances. Our MPCC coma corrector e.g. gives the ideal working distance with +/- 1mm tolerance, a Celestron EdgeHD with +/- 0.5 mm for perfect seeing conditions.
    Answer by: Baader Web Team (Admin) on Jul 13, 2020 4:10:00 PM
  184. Rated: -1
    7/10/2020 6:18 PM Baader UFC S70 / T-2 Adapter Telescope-Adapter (optical height: 1 mm)
    The picture shows what appears to be a 0,3mm M48 fine-adjustment ring (#2457916). Is that what is shown in the picture? If that is correct is one included with this item?

    Answer rated: 1
    If the T2 male thread is too long it can cause a collition with the filter slider. This ring is not a #2457916 it is just a little helper to avoid a collition.
    Answer by: Baader Web Team (Admin) on Jul 13, 2020 10:21:00 AM
  185. Rated: 2
    7/10/2020 6:10 PM Baader Pushfix Reducer 2" to 1¼" (T-2 part #15a)
    Hello, I have a C8 edge hd with the Baader 2 Clicklock diagonal mirror #2956100. You can use the Baader Pushfix reducer (T2 part 15a) with this diagonal mirror to reduce the back focus with the 1,25 eyepieces?? Thanks!

    Answer rated: 0
    Yes, you can use the Baader Pushfix Reducer for this purpose. However you will additionally also need our Baader 2" (male) / T-2 (male) adapter #1508035
    https://www.baader-planetarium.com/en/accessories/adapters-imaging-accessories/2-inch-sc-thread/baader-adapter-2%22-(male)--t-2-(male).html
    Answer by: Baader Web Team (Admin) on Jul 13, 2020 9:42:00 AM
  186. Rated: -1
    7/10/2020 10:51 AM 2" BDS-RT Baader Diamond Steeltrack Focuser
    Is there an 2" BDS-RT Baader Diamond Steeltrack Focuser Adapter for Explore Scientific ED APO with a 54mm 0,75 outer thread? (I have a clicklock 54i that is the fitting Im looking for also for the focus adapter). If not, I’d like to put that up on the wishlist.

    Answer rated: 7
    So far we had no plans to produce such an adapter, you're the first to request this. We will keep this in the "wishlist" but can't guarantee anything.
    Answer by: Baader Web Team (Admin) on Jul 20, 2020 2:09:00 PM
  187. Rated: 0
    7/9/2020 4:01 AM Baader Hyperion Universal Zoom Mark IV, 8-24mm eyepiece (1¼" / 2")
    I want to do projection photography with the Zoom Mark IV using a Canon EOS R with and without the Hyperion-Barlow 2.25x using the 2" barrel with my telescope.

    I believe I can do this by using a Wide-T-Ring Canon R (2408336), a UFC S52 Camera-Adapter (2459119), a UFC Base (2459110), a UFC S70 / T-2 Adapter (2459130), a Baader TQC/TCR Heavy duty T-2 Quick Changing System (2459130) and a M43 / T-2 Adapter (2958080).

    What I am not sure of is exactly what UFC S70 and/or T-2 extensions I would need to get the recommended back focus for use with the full frame EOS R camera. I am also not sure if I could fit the #2459130 in the setup, it would be convenient but by no means necessary. I am also not sure if I would require different extensions when using the Barlow.

    Can you please confirm if these parts will work as I intend (with or without the #2459130), what extensions I should use to get the recommended back focus with the EOS R camera and if I need different extensions when using the Barlow?

    Answer rated: 4
    Under the link Downloads you can find our PDF according digiscopie:
    https://www.baader-planetarium.com/en/downloads/dl/file/id/444/product/3117/digiscoping_camera_adaptations_for_afocal_photography_and_eyepiece_projection.pdf
    I´d prefer to adapt the camera this way:
    https://www.baader-planetarium.com/en/baader-hyperion-t-adapter-m43i--t-2a-(m42x0.75).html
    https://www.baader-planetarium.com/en/baader-t-2--15-mm-extension-tube-(t-2-part-25a).html 2 pieces
    https://www.baader-planetarium.com/en/baader-tqctcr-heavy-duty-t-2-quick-changing-system-(t-2-part-06a-and-07).html
    https://www.baader-planetarium.com/en/baader-wide-t-ring-canon-eos-with-d52i-to-t-2-and-s52-4289.html

    And as a separate combination:
    https://www.baader-planetarium.com/en/baader-2%22-safety-kerf-nosepiece-with-2%22-filter-thread.html
    https://www.baader-planetarium.com/en/baader-ufc-s70--2%22-adapter-2%22-sc-thread-(f)-telescope-sided.html
    https://www.baader-planetarium.com/en/baader-ufc-base-(filter-chamber)-telescope-sided-s70-dovetail-receptor.html
    https://www.baader-planetarium.com/en/baader-ufc-2%22-sc-adapter-2%22-(m)-camera-sided.html
    https://www.baader-planetarium.com/en/baader-2%22-clicklock-eyepiece-clamps.html

    Then you´re able to fast change filters and eye pieces. Just take care that it needs about 60mm back focus and it doesn´t
    allow using the zoom with barlow. On the other hand, please refer the first digiscopie PDF last page that you can reach an
    enormous focal length anyway. It should´nt be neccessary using the barlow.
    Answer by: Baader Web Team (Admin) on Jul 10, 2020 2:22:00 PM
  188. Rated: -1
    7/9/2020 3:24 AM Baader Wide-T-Ring Canon R (for Canon R bajonet) with D52i to T-2 and S52
    I would like to use this Canon R Wide T-Ring and the UFC system as shown in the product image with the telescope. I want to use it to attach a Canon EOS R to my telescope's field flattener which has 55 mm of back focus and a male T-2 connector.

    Answer rated: 4
    Ok, the optical length (or back focus) of the camera is 20mm so we have 35mm left for the adapters. From flattener to camera you´ll need following parts:
    https://www.baader-planetarium.com/en/m48-fine-adjustment-rings-(03--05--1-mm)---aluminium.html 1mm
    https://www.baader-planetarium.com/en/m48-fine-adjustment-rings-(03--05--1-mm)---aluminium.html 0,3mm
    https://www.baader-planetarium.com/en/baader-ufc-s70--t-2-adapter-t-2-(f)-telescope-sided.html 1mm
    https://www.baader-planetarium.com/en/baader-ufc-s705-extension-5mm-with-s70-dovetail--dovetail-clamp-screws.html 2pc=10mm
    https://www.baader-planetarium.com/en/baader-ufc-base-(filter-chamber)-telescope-sided-s70-dovetail-receptor.html 13mm
    https://www.baader-planetarium.com/en/baader-ufc-s52-dovetail-camera-adapter-(eos--sony).html 2mm
    https://www.baader-planetarium.com/en/baader-wide-t-ring-canon-eos-with-d52i-to-t-2-and-s52-4289.html 8,3mm

    This is in summary 35,6mm because filters lay out the focus to extra focal caused by refraction through the filter. Rule of thumb is a third
    of thickness of filter according to 2mm thick filter is roughly 0,6mm.
    Answer by: Baader Web Team (Admin) on Jul 9, 2020 2:34:00 PM
  189. Rated: 0
    7/9/2020 3:13 AM Baader T-Ring Canon EF (EOS) to T-2
    If I use this with a Canon EOS R that has the Canon Mount Adapter EF-EOS R (#2971C002) attached, will it work with my telescope's field flattener which has 55 mm of back focus without any other T-2 system parts?

    Answer rated: 0
    Yes! Back focus length of the Canon EOS-R is 20mm and the EF-EOS-R adapter is 24mm. Plus this 11mm long Canon EOS EF bayonet ring gives you the needed 55mm back focus.
    Answer by: Baader Web Team (Admin) on Jul 9, 2020 9:27:00 AM
  190. Rated: 2
    7/9/2020 3:08 AM Baader T-Ring Canon EF (EOS) to T-2
    If I use this with a Canon EOS 5D Mark IV will it work with my telescope's field flattener which has 55 mm of back focus without any other T-2 system parts?

    Answer rated: 2
    Yes! The optical length of the camera is 44mm and this bayonet ring is 11mm so you get the needed 55mm back focus.
    Answer by: Baader Web Team (Admin) on Jul 9, 2020 9:07:00 AM
  191. Rated: 3
    7/8/2020 4:50 PM 2" MPCC Mark III (Multi-Purpose Coma Corrector for Newtons)
    I bought the MPCC to use with a Skywatcher Explorer 150d newton. Using an asi294mc, the only way I will get focus at infinity is to screw the corrector directly in the 11mm m42-m42 ring that comes with the asi. Adding spacers to reach 55mm doesn’t work. I am thus far from that 55mm that is supposedly required to reach focus. Any idea about what is happening here??

    Answer rated: 6
    Do you have any extensions in use which are required to reach focus with an eyepiece? The MPCC is designed to work with a DSLR, that's why it has a working distance of 55mm. To reach focus with a DSLR (or a camera with MPCC), the focusser must be moved farther inwards than with an eyepiece. On some Newtonians, this is made possible by some extension tubes, which must be removed for photography - otherwise, the focuser tube would be in front of the main mirror.
    On the other hand, there are Newtonians which are designed strictly for visual or photographic use, both by focus travel and size of the secondary mirror. With these telescopes, it may be that they can't provide the backfocus needed for a DSLR or a coma corrector, although you can reach focus with a camera which requires as little backfocus as your ZWO.
    Please check the telescope's manual if there is any information about attaching a cmaera, especially a DSLR.
    Answer by: Baader Web Team (Admin) on Jul 9, 2020 8:19:00 AM
  192. Rated: 3
    7/2/2020 8:05 PM Baader 2"/90° Astro Amici-Prism with BBHS ® coating
    Should I unscrew the 2" nosepiece of this eyepiece by hand? If so, it should be clockwise or conter clockwise?

    Answer rated: -2
    You can unscrew it by hand, there are no tools necessary. To unscrew it, rotate the nosepiece counterclockwise.
    The Clicklockk is held in place with the tiny screws at the side, but the noseiece is only screwed onto the body. It is the part Baader 2" Safety Kerf nosepiece with 2" filter thread # 2408156 with a regular thread (an SC-thread).
    Answer by: Baader Web Team (Admin) on Jul 3, 2020 8:09:00 AM
  193. Rated: 2
    7/1/2020 11:40 PM Baader Ultra-Narrowband H-alpha 3,5nm Filter
    Can this filter be used as an internal energy rejection filter for H-alpha solar observation on 140mm and 60mm refractors? The ERF would be placed in front of the diagonal mirror, and the etalon behind the diagonal.

    What is the filter's throughput beyond 1000nm?

    Answer rated: 6
    We do NOT recommend this! No filter near focus can replace a front end blocker - as 100% of solar energy hit the filter close in front of the focus position. Front end energy blocking is mandatory for H-alpha work - but not so for white light work.

    Why - because in white light you could use a Herschel Wedge Prism to throw away 95.4 % of ALL entering energy - before it even reaches the first neutral density filter or dielectric continuum filter.

    This is not possible on H-alpha - you need 100% of the H-alpha wavelength, but preferably zero of anything else. so - in theory - you can do this as you describe - but the filter at that heating point can break on you any second.

    Also - all photographic narrowband filters ought to be fully blocked OD 4.0 from 390 nm to 1150 nm - as this is the sensitivity range of almost all CCD/CMOS-chips (most filter suppliers though do not show their blocking efficacy above 700 nm....).

    So the 3.5nm H-alpha-filter is surely blocked to 1150 nm - but our front end D-ERF-filters are blocked to 1450 nm - exactly to provide perfect solar safety. Above 1400 nm most optics do not pass IR anyhow.
    Answer by: Baader Web Team (Admin) on Jul 2, 2020 7:47:00 AM
  194. Rated: 1
    7/1/2020 11:32 PM BCF 1 - DSLR Astro Conversion Filter for Canon APS-C Cameras (all latest Models)
    Which H alpha filter do I need for a canon 450D?

    Answer rated: 3
    The BCF1 will work.
    Answer by: Baader Web Team (Admin) on Jul 2, 2020 8:23:00 AM
  195. Rated: 1
    7/1/2020 3:22 PM Baader 2" Amici-erecting-prism 45° with 2" SC-thread and 2"/1¼"-reducer
    I have a Celeston C5, used for terrestrial viewing. What benefits should I expect by using Baader 2" Amici-Prism 45° instead of the supplied diagonal? And it is possible to use a Click Lock adapter on it? If so, what model?


    Answer rated: 0
    If you have a regular 90° star diagonal instead of an Amici at the moment, the Amici will deliver correct-orientated images like in a pair of binoculars or with the naked eye.

    The free aperture of this Amici is larger than that of many smaller Amici prisms which are included with some telescopes, so there is less vignetting with eyepieces with longer focal lengths, but both the C5 and the Amici have only got a free diameter of 26-27mm, so there will be some vignetting with most 2" eyepieces.

    It is not possible to replace the eyepiece clamp with a Clicklock.
    Answer by: Baader Web Team (Admin) on Jul 1, 2020 3:29:00 PM
  196. Rated: 0
    6/30/2020 7:10 AM Baader 17mm Hyperion 68° Modular Eyepiece
    I want to use it as a 2" eyepiece, what will be the focal length?

    Answer rated: 2
    As 17mm eyepiece, you can use it both with 1.25" and 2" focusers.
    If you remove the 1.25" nosepiece with the included optics, you have a 21.8mm eyepiece, which fits only for 2" focusers.
    Answer by: Baader Web Team (Admin) on Jun 30, 2020 12:44:00 PM
  197. Rated: 2
    6/29/2020 5:45 PM Baader FlipMirror II Star Diagonal
    Can the Flip Mirror 2 be used with the Celestron Edge HD 11 and what adaptor is needed to attach it to the telescope back?
    Thank you

    Answer rated: 4
    Yes it can. You only need our SC / HD Ultra-Short T-Adapter #2958500B, as described on page 5 of our FlipMirror II Instruction manual: https://www.baader-planetarium.com/en/downloads/dl/file/id/1568/product/4285/instruction_manual_baader_flipmirror_ii_star_diagonal.pdf
    Answer by: Baader Web Team (Admin) on Jun 30, 2020 3:30:00 PM
  198. Rated: -4
    6/29/2020 4:08 PM Baader Hyperion DT-Ring SP54/M43
    What specific items would I need to attach the 2" Venus filter to a 62mm Nikon camera lens? I am not attaching anything to a telescope. I know I need the filter holder M48/SP54, but I am confused about the DT rings.

    Answer rated: 1
    Correct, you need the M48/SP54 filter holder #2408166 and in addition only the Hyperion DT-Ring SP54/M62 #2958062 to connect the filter directly to your camera lens.
    Answer by: Baader Web Team (Admin) on Jun 30, 2020 8:08:00 AM
  199. Rated: 2
    6/29/2020 3:42 PM Baader 2" BBHS ® Mirror Diagonal with 2" ClickLock Clamp
    What's the easiest way to attach the "Baader 2" BBHS ® Mirror Diagonal with 2" ClickLock Clamp" to Televue NP127is and keeping the optical path shortest for Denkmeier Binotron 27 system?

    Is there also a way how to add UFC to the path and keep somehow ClickLock detachable for the bino vs single eyepiece use?

    Answer rated: 1
    You can replace the 2" Clicklock with Baader Adapter 2" (male) / T-2 (male) # 1508035, then you have a male T-2-thread at the end of the star diagonal. Here, you can either directly attach a binoviewer with female T-2-thread, or use a T-2 quickchanger (# 2456313A or # 2456313), if it has the Zeiss micro-bayonet dovetail. If your bino-viewer should have a female 2"/SC-thread, you can use Baader 2"/2" Inverter Ring with 48mm filter thread # 1508020 instead - I can't find an info about which threads the Denkmeier offers.

    To connect the UFC to one of our 2" star diagonals, you can e.g. remove the 2" nosepiece. It has got a male SC-thread, the body a female SC-thread. Then you need
    1x Baader UFC S70 / 2" SC-thread (f) Telescope-Adapter (optical height: 1 mm) # 2459128
    1x Baader UFC Base (Filter Chamber) telescope-sided S70 dovetail receptor (optical height: 13 mm) # 2459110
    1x Baader UFC 2" (m) SC Camera-Adapter (optical height: 2 mm) # 2459120
    plus the filter sliders. This adds 16mm to the length.

    Depending on the threads at the focuser of your telescope, it may be possible to connect the star diagonal via the SC-thread – but then, you can't rotate it easily into a convenient position, so this would be only recommended for telescopes on an alt-az mount.
    Answer by: Baader Web Team (Admin) on Jun 30, 2020 2:02:00 PM
  200. Rated: 4
    6/28/2020 11:11 PM Baader T-2 / 90° Baader Roof-Prism with BBHS ® coating (T-2 part #02)
    Regarding the quality of visual observation, is there any difference between this T2 Roof prism (2456130) and the 2" Astro Amici Prism (2456120)?

    Answer rated: -1
    Both of our Astro-Amici Prisms are produced with the same specifications. There is no difference in the quality of visual observation - the only difference is the size.
    Answer by: Baader Web Team (Admin) on Jun 29, 2020 10:30:00 AM
  201. Rated: 0
    6/27/2020 6:52 PM Baader Double T-Filterholder 1¼"
    Can this holder be used to insert a filter before the MaxBright II binoviewer connected to a Prism diagonal T-2/90º 32mm? Is anything else needed?

    Answer rated: 0
    This should work, although you probably need a T-2-extension (7,5 or 15mm) so that the filter doesn't hit the prism. A mirror diagonal is less critical. But there is a higher risk of reflections because the filter is very close to the prism diagonal and the prisms inside of the bino-viewer. We'd recommend to place the filter in the nosepiece in front of the star diagonal.
    Answer by: Baader Web Team (Admin) on Jun 29, 2020 1:21:00 PM
  202. Rated: 2
    6/25/2020 4:50 PM Universal Alan Gee II - Telecompressor (UAG II)
    I’d be interested in using the universal Alan Gee with my Maxbright binoviewer (old version) and for visual mono with my meade acf 12”. I already own a click lock diagonal. I’m not interested in photography
    I’d appreciate your input about field of view with the acf and if it can be used with my old binoviewer.

    Answer rated: -1
    This should work without problems. You can attach the UAG-II to the T-thread of the old MaxBright binoviewer, too.

    The focal length of the telescope will ve reduced approximately by factor 5.9.

    Please note that the focal length of a Schmidt-Cassegrain changes, if you place accerories farther away, e.g. with a 2" star diagonal. That's why we recommend a smaller T-2-star-diagonal. We do not have data on how much the focal length of a Meade ACF changes with a 2" star diagonal exactly, but it shouldn't be too much.
    Answer by: Baader Web Team (Admin) on Jun 25, 2020 4:57:00 PM
  203. Rated: 0
    6/24/2020 4:10 PM Baader Hyperion Universal Zoom Mark IV, 8-24mm eyepiece (1¼" / 2")
    i have this eyepiece and a ZWO camera. Is there some adapter i need to connect the two?

    Answer rated: 6
    You need
    - Hyperion / Morpheus® T-Adapter M43/T-2 # 2958080
    plus either a T-2/1.25" eyepiece clamp like one of these:
    - https://www.baader-planetarium.com/en/accessories/adapters-imaging-accessories/eyepiece-clamps.html?filter_threads_lenssided=536
    or for C-Mount
    - Baader C-Mount T-2 with integrated 1¼" Filterholder # 2958520

    In addition, you may need T-2-extensions to achieve the desired magnification, and to enlargen the image so that there are no more distortions at the edge which appear when the sensor is too close to the lens - this depends on the sensor size.
    We have described several adaptations in this PDF:
    Digiscoping - camera adaptations for afocal photography and eyepiece projection
    at
    https://www.baader-planetarium.com/en/downloads/dl/file/id/444/product/1206/digiscoping_camera_adaptations_for_afocal_photography_and_eyepiece_projection.pdf
    Answer by: Baader Web Team (Admin) on Jun 24, 2020 4:27:00 PM
  204. Rated: 3
    6/24/2020 2:36 AM Baader Hyperion Universal Zoom Mark IV, 8-24mm eyepiece (1¼" / 2")
    Since I have recently bought a 2" telescope, I am looking to add 2" (not 1.25" eyepieces) eyepieces.
    In appearance, the baader hyperion selection look like 2" with a 1.25" projection added on.
    My question: Are these eyepieces, basically 1.25" made usuable in 2" telescopes? Or 2" eyepieces with a 1.25 projection added on?

    Answer rated: 3
    Your first assumption is correct. They are, like most of our other eyepieces, in fact 1.25" eyepieces which can be used for 2" as well. The only "true" 2" eyepieces we currently sell are our Hyperion Asphercic 31mm and 36mm: https://www.baader-planetarium.com/en/accessories/optical-accessories/eyepieces.html?filter_eyepiece_opticaldesign=320
    Answer by: Baader Web Team (Admin) on Jun 24, 2020 7:50:00 AM
  205. Rated: 0
    6/23/2020 8:33 PM Baader Wide-T-Ring Nikon Z (for Nikon Z bajonet) with D52i to T-2 and S52
    I have a nikon z6 and need the exact part list needed to connect it to a celestron cpc 11 with the celestron reducer/corrector f/6.3. I would like two options one providing ability to use a filter and one without the ability to use a filter. Thank you.

    Answer rated: -3
    The reducer has got a backfocus of ca. 105mm.

    The Nikon Z has got a flange focal distance of 16mm, to which our Wide T-Ring adds 8.3mm. The
    - T-Adapter (C5, 6, 8, 9-1/4, 11, 14) #93633-A # 820760
    adds another 50mm, so you have a distance of 74,3mm and need another 30mm as T-2-extensions – e.g.
    - 2x Baader T-2 / 15 mm Extension Tube (T-2 part #25A) # 1508154.

    For the UFC, you can mount it directly to the SC-thread of the reducer e.g. with

    - Baader UFC S70 / 2" SC-thread (f) Telescope-Adapter (optical height: 1 mm) # 2459128
    - Baader UFC Base (Filter Chamber) telescope-sided S70 dovetail receptor (optical height: 13 mm) # 2459110
    - e.g. Baader UFC 2" (M48) Filter Slider # 2459112 for 2"-filters
    - Baader S52 dovetail Camera-Adapter for Wide-T-rings (optical height: 2 mm) # 2459119
    - Baader UFC S70/15 Extension 40mm # 2459143
    - Baader UFC S70 Extension 5mm # 2459141
    - Baader UFC S70 VariLock 15-20mm extension # 2459145 set to 20mm
    That's 81mm for the UFC plus 24mm for the camera + Wide T-ring

    This gives you a larger free aperture than the T-2-adaptation above. Of course, you can insert an empty filter slider to take photos without a filter.
    Answer by: Baader Web Team (Admin) on Jun 24, 2020 3:14:00 PM
  206. Rated: 3
    6/22/2020 8:39 PM Baader Hyperion DT-Ring SP54/M43
    I have a couple of Hyperion eyepieces and on the box they show this adapter connection to a camera for eyepiece projection photography. I purchased one and do not see anyway it screws onto the eyepiece and it does not connect to my Canon DSLR. Can you explain what adapters I need to connect my eyepieces to a Canon EOS Rebel T6 / EOS 1300D?.

    Thank you

    Answer rated: 2
    The Hyperion eyepieces feature two thread connections. Removing the dustcap reveals the M43 thread. Removing also the thread protection ring (made of silicone rubber) will reveal a SP54 thread.
    So the SP54 / M43 Adapter, where you asked your question, will not work because at first it would require an additional SP54 extension ring #2958090. And secondly it makes no sense because the M43 thread is already available.
    With the DT-Ring you can however make a lot of other connections. We strongly suggest that you first take a look at our PDF
    Hyperion Application Examples: https://www.baader-planetarium.com/de/downloads/dl/file/id/134/product/1209/hyperion_eyepieces_application_examples.pdf
    and secondly also our
    Digiscoping Brochure: https://www.baader-planetarium.com/en/downloads/dl/file/id/444/product/1209/digiscoping_camera_adaptations_for_afocal_photography_and_eyepiece_projection.pdf
    Answer by: Baader Web Team (Admin) on Jun 23, 2020 8:25:00 AM
  207. Rated: -1
    6/20/2020 11:04 PM Baader MaxBright® II Binoviewer with case
    I have strabismus. Should I have trouble using MaxBright II due to this condition?

    Answer rated: 1
    We cant judge the severity grade of your condition. If its light, than your eyes should be able to compensate. But we would advise you to first buy a cheap or used binoviewer (or try one out at a star party / astro show or so on) to find out if binoviewing in general is possible for you.
    Answer by: Baader Web Team (Admin) on Jun 22, 2020 10:00:00 AM
  208. Rated: -1
    6/19/2020 8:48 PM Baader Hyperion Universal Zoom Mark IV, 8-24mm eyepiece (1¼" / 2")
    I have a Meade Instruments 07363 No.64 SLR Camera T-Adapter connected to the visual back port of my meade ETX 90mm telescope. I would like to connect my Hyperion Mark IV zoom directly to the male threaded T adapter end of this Meade adapter. Is there an adapter ring that fits into the telescope end of the Hyperion lens (similar to how the "A" and "B" adapter rings work) that will allow it to screw directly onto the T thread of this Meade #64?

    Answer rated: 6
    Yes, the Hyperion provides an SC-thread, which you can use for this adapter:
    2"a / T-2i Zero-length reducing piece (zero optical length) # 2454833
    Answer by: Baader Web Team (Admin) on Jun 22, 2020 9:41:00 AM
  209. Rated: -2
    6/19/2020 4:51 AM Baader Hyperion Universal Zoom Mark IV, 8-24mm eyepiece (1¼" / 2")
    I was told that the outside diameter at the turning ring of the Baader Hyperion 8-24mm Mark IV Zoom Eyepiece (1.25"/2") is 55.07mm. I was trying to make sure that this eyepiece would fit inside the Orion Variable Universal Camera Adapter for eyepiece-projection photography on my refractor telescope: https://www.telescope.com/catalog/product.jsp?productId=101417

    Unfortunately, it would not as the inside diameter of the adapter is 38.3mm,

    Do you have a similar product that I can use with this eyepiece for eyepiece-projection photography on my Orion ED80 refractor telescope...???

    Thanks in advance.

    Answer rated: -3
    You can use for your application our Classic Ortho / Plössl eyepieces with a maximum outer diameter of 34,8 mm:
    https://www.baader-planetarium.com/en/accessories/optical-accessories/eyepieces/q-turret-classic-ortho-plossl.html

    These are fixed focal lengths however. We do not have such narrow zoom eyepieces. We also have different eyepiece projection adapters if you're interested (but they also only accomodate our classic ortho/plössl eyepieces):

    https://www.baader-planetarium.com/en/accessories/adapters-imaging-accessories/camera-adapters/projection-adapters/opfa---eyepiece-projection-adapter--(-i---vii-).html

    https://www.baader-planetarium.com/en/accessories/adapters-imaging-accessories/camera-adapters/projection-adapters/adps---afocal-digital-projection-system-(-i---vii-).html
    Answer by: Baader Web Team (Admin) on Jun 19, 2020 9:21:00 AM
  210. Rated: 0
    6/17/2020 6:15 AM Baader Wide-T-Ring Nikon Z (for Nikon Z bajonet) with D52i to T-2 and S52
    I have a mewlon 250 crs and Nikon Z6 . what i need more with baader wide T-ring for Nikon Z bajonet ref 2408335. Cordially.

    Answer rated: -1
    This depends on the connections of your telescope (and if you need to keep a certain distance to a reducer) - I'm sorry, but we don't have all data here available.

    The easiest way is usually the S52 barrel #2958551, then you can adapt it like any 2" eyepiece.

    For all other configurations, please let us know which threads you have available or if you need to keep a certain distance.
    Answer by: Baader Web Team (Admin) on Jun 17, 2020 9:24:00 AM
  211. Rated: 1
    6/16/2020 4:34 PM Baader T-2 / 90° Baader Roof-Prism with BBHS ® coating (T-2 part #02)
    Is this T-2 Baader Roof prism recommended for using with Mark V and a Celestron 9.25 SCT ? If so, what additional accessories are needed for a complete configuration?

    Answer rated: 1
    To use this or any other T-2 prism with the Binoviewer you need on the binoviewer side:
    - Baader Heavy Duty T-2 QuickChanger (T-2 part #06A) # 2456313A
    to connect it to the Zeiss Microbayonet ring-dovetail.

    On the telescope side, you need either one of these nosepieces:
    - Baader Nose piece 1¼" / T-2 (T-2 part #14) # 2458105
    - Baader 2" / T-2 Nose Piece and Camera adapter (T-2 part #16) # 2408150
    or you can screw it directly onto a Schmidt-Cassegrain 2"-SC-thread with
    - Baader SC / HD Ultra Short T-Adaptor, 7mm optical length # 2958500B

    You can use this roof prism with a binoviewer, too. But please note that even astro-grade prism still has the roof edge. So, while it will not produce double images even at high magnifications, there can be reflections at the roof which goes straight through the center of the field of view. So, if you have a bright object in the center, there can be reflections (just like there are spike in a Newtonian telescope caused by the holder of the secondary mirror). You can reduce them by moving the planet/star to the side, but they are part of the optical design. As binoviewers are often used for observing planets, we usually recommend to use a standard prism (which also requires less length).
    Answer by: Baader Web Team (Admin) on Jun 17, 2020 11:35:00 AM
  212. Rated: 2
    6/16/2020 4:08 AM Mark V Großfeld (Giant)-Binocular
    What are the recommended accessories for using Mark V with a Celestron 9.25?

    Answer rated: 4
    We have described several adaptations in the manual which you can find in the download section of the MaxBright Binonoviewers website. For an SC, you basically only need a nosepiece. We also recommend a Glasspath Corrector 1.25x, although it is not absolutely necessary - but at higher magnifications, it removes the colour aberrations which may be visible even at an f/10 telescope.
    You can find sets with nosepiece and GPC here:
    https://www.baader-planetarium.com/en/accessories/optical-accessories/bino-viewer/maxbright-ii-sets.html

    Please make sure that you have a sturdy eyepiece clamp. For a compact adaptation, we also recommend a TZ-2 star diagonal which can be attached directly to the binoviewer, but reaching focus is no problem with a Schmidt-Cassegrain.
    Answer by: Baader Web Team (Admin) on Jun 16, 2020 10:41:00 AM
  213. Rated: 1
    6/15/2020 11:46 PM Baader Wide-T-Ring Nikon Z (for Nikon Z bajonet) with D52i to T-2 and S52
    What do I need to attach a Nikon Z6 camera to a Celestron HD 14" telescope? Sorry I find your web site very confusing. Thanks for your help

    Answer rated: 0
    The Celestron C14 EdgeHD has a back focus of 146,05mm and needs a T-adapter like this (US Item #93622)::
    https://www.celestron.de/ce_de/t-adapter-48mm-edgehd-925-11-14.html
    We recommend this bigger M48 adapter instead of the smaller with T2 thread M42x0,75 because your camera has a full format sensor. From this adapter you have 55mm left which should be fine for DSLR cameras. But you have a mirrorless camera with 16mm back focus plus this Rings:
    https://www.baader-planetarium.com/en/baader-wide-t-ring-nikon-z-with-d52i-to-t-2-and-s52.html
    https://www.baader-planetarium.com/en/changer-ring-s52--m48.html
    which hight is 8,3mm. So you have a gap of 30,7mm between your camera and DSLR (55-16-8.3) which you can fill with this rings:
    https://www.baader-planetarium.com/en/baader-hyperion-finetuning-ring-28.html
    https://www.baader-planetarium.com/de/m48-fein-abstimmringe-aus-aluminium-(03--05--1-mm).html (2pc of 1mm and 1pc of 0.5mm)
    Answer by: Baader Web Team (Admin) on Jun 16, 2020 9:46:00 AM
  214. Rated: -3
    6/14/2020 9:04 PM Bundle: Hyperion Universal Zoom Mark IV with Hyperion-Barlow 2.25x (8-24mm / 3.6-10.7mm)
    For use with a binoviewer, should I buy one or two Barlows?

    Answer rated: -1
    If you want to use a Barlow lens, you should always place it directly in front of the eyepiece - otherwise, it would deliver a much, much higher magnification. A binoviewer has got an optical length of ca. 11cm, so you'd probably be way beyond the useful magnification - you can find more information in our PDF "Calculating different Magnifications with the VIP-Barlow" at
    https://www.baader-planetarium.com/en/downloads/dl/file/id/240/product/1062/calculating_different_magnifications_with_the_vip_barlow.pdf
    The calculations are similar for all Barlow lenses.

    Instead of using two Barlow lenses, we'd highly recommend to use different glasspath correctors (GPC) to achieve different magnifications with a binoviewer.

    You should use a GPC, anyway, to make sure that you reach focus and to eliminate any colour aberrations which might be caused by the prisms inside of the binoviewer. This way, you can also be sure that the image quality is good – if you use two BArlow lenses, both should be made in the same production run to avoid any small differences which are no problem when you use them for mono-viewing, but which become obvious when bino-viewing. That's also why both eyepieces should be bought together.

    And an additional bonus, aside of the quality: One GPC is cheaper than two Barlow lenses.
    Answer by: Baader Web Team (Admin) on Jun 15, 2020 8:19:00 AM
  215. Rated: 0
    6/14/2020 4:40 PM Baader DSLR-2" Filter Holder M48/SP54
    I have a number of Hyperion & Morpheus eyepieces, and I want to use 2 single polarizing filters to control moonlight, etc. I'll attach a 2" filter to the diagonal, but where should I put the second (either a 2" or 1.25") filter on the eyepiece? And where should it go on the Morpeus? If, on the Hyperion, it goes between the nosepiece and the body, will that affect the characteristics of the eyepiece?

    Answer rated: 3
    Both Hyperion and Morpheus eyepieces feature a 1.25" thread, so it is the easiest if you simply use a Baader Single Polarizing Filter 1¼"
    #2408343 for the eyepieces and a 2" for the star diagonal.
    If you already own two single 2" polarizing filters, you can place one in the reducing adapter from 2" two 1.25" - most of them provide a 2" filter thread, or you can use one of ours: https://www.baader-planetarium.com/en/accessories/adapters-imaging-accessories/eyepiece-clamps.html?filter_threads_eyepiecesided=516&filter_threads_lenssided=523

    If you insert a 2" filter into the body of a Hyperion, it will act like a finetuning ring with the length of the filter height (6 or 8mm, depending on the filter cell) and increase the focal length of the eyepiece. These rings and their effects are described e.g. in this PDF: https://www.baader-planetarium.com/en/downloads/dl/file/id/134/product/1210/hyperion_eyepieces_application_examples.pdf
    Answer by: Baader Web Team (Admin) on Jun 15, 2020 8:30:00 AM
  216. Rated: -1
    6/11/2020 3:49 PM Baader 2" Cool-Ceramic Safety Herschel Prism (Visual / Photographic)
    The documentation states that the Solar Continuum filter can be removed when using a fully apochromatic APO refractor*. What is implied is that a 1.8 ND filter should be substituted when doing visual observing – with of course the 3.0 ND filter still being in place. Please confirm.

    If this is the case, please also clarify if the 1.8 ND filter should be placed where the Continuum filter was with the 3.0 ND behind it closest to the eye piece, the other way around with the 3.0 ND closest to the prism with the 1.8 ND closest to the eye piece, or whether it makes no difference.

    *The documentation specifically mentions Astro Physics, TEC, and Zeiss. I am using a Tele Vue-85 which claims APO performance.

    Answer rated: 0
    We do not comment on the APO-status of the TV-85, but we confirm that visual and imaging results will show solar surface details in better sharpness when keeping the continuum filter in the light path.

    To be straight! The Herschel wedge warrants for a safe solar viewing experience, with only the ND 3.0 filter in place! However, the photopic reception of brightness is very different for different eyes (and related to age as well!).

    When adding a solar continuum filter, the user has the same amount of transmission reaching the eye as without such a filter - but only within a 10 nm wide part of the spectrum at 540 nm. For this reason the "overall brighness" is perceived as being less. But if the Herschel wedge (w. ND 3.0 filter in place) were transmitting a dangerous amount of energy - even the small 10 nm "window" would constitute a "danger".

    So for a 99.9 % majority of people it is not "necessary" from the aspect of safety, to add another ND -filter on top of the necessary ND 3.0 filter. But - a small number of people do inherit raised sensitivity for brightness, leading to eventual phototoxic reactions in the eye during prolonged and repeated exposure to light levels that would be perceived as normal by others.

    Effects of phototoxic overreaction have been exhaustively investigated for the new generation of LED and CREE light sources which can compete in their radiation intensity with solar brightness in the meantime - when stared into at close distance. So the same precautions as valid for direct intensive LED illumination must be observed for Herschel-wedge operation just as well.

    Fortunately most people have a "built in" aversive-reaction, to avoid excessive amounts of light falling onto the retina. So everyone observing the sun should be attentive to constantly observe his own "comfort feeling". If the visual brightness is experienced as causing strain on the eye, or an "afterglow-experience" will remain for some time when lifting the eye from the eyepiece, - in these cases a further added 0.9 ND filter will largely help to have a comfortable seeing experience. Adding a 1.8 ND filter though onto the 3.0 ND-filter will dim the solar image to a degree that fine solar details become invisible (unnecessarily).

    Do test the Herschel brightness experience in good faith for a few seconds with only the ND 3.0 filter in place (always!). Depending on your age then maybe add a 0.9 ND- or even 0.6 ND-filter, until the image brightness is perceived as comfortable even at viewing sessions of up to 3 minutes. After each 3 minutes a short pause is mandatory, to check for any "afterglow"- effects, for dizzyness or for impaired vision. This is because brightness strain on the eye can bring out hidden retina damages or very early retina dislocation that went unnoticed before.

    Only for imaging purposes, the ND 3.0 filter may be taken off the light path and replaced with one of the photographic ND-filters (0.6/0.9 or 1.8 ND) - so as to arrange brightness in a way that the shortest available camera exposure time can be made use of.
    Answer by: Baader Web Team (Admin) on Jun 15, 2020 2:42:00 PM
  217. Rated: 1
    6/9/2020 10:27 AM Baader M43a x 0.75 / T-2a Adapter (e.g. for Takahashi)
    I believe that This part with internal threads M43x0.75 should be able to accomodate the lens element of the baader VIp barlow. ??

    Answer rated: -1
    Yes, the small Barlow-element will fit here, too.
    Answer by: Baader Web Team (Admin) on Jun 9, 2020 12:22:00 PM
  218. Rated: 2
    6/8/2020 6:54 PM Baader Zenith Prism Diagonal T-2/90 ° with 32mm Prism (T-2 part #14)
    I am interested in your 1.25 star diagonals. I would like to upgrade from my stock 90 degree on my MAK-CASS. What is the preferred diagonal for this scope mirror or prism. Thanks for your time and consideration. Kind regards.

    Answer rated: 4
    Today, you can usually chose a good mirror and be happy; only some older high-end refractor telescopes needed a prism as part of their optical design.
    If you want to dig deeper into this question (which has no final answer), we recommend two PDFs on our website:

    Baader Star Diagonals (T-2 and 2") at https://www.baader-planetarium.com/en/downloads/dl/file/id/1617/product/1687/baader_star_diagonals_t_2_and_2.pdf – here we explain the differences between our various star diagonals and coatings

    Testreview - Mirror vs. dielectric vs. prism diagonal comparison - W. Paolini at https://www.baader-planetarium.com/en/downloads/dl/file/id/160/product/2871/testreview_mirror_vs_dielectric_vs_prism_diagonal_comparison_w_paolini.pdf – an in-depth test of mirrors and prisms.
    Answer by: Baader Web Team (Admin) on Jun 10, 2020 3:37:00 PM
  219. Rated: 1
    6/7/2020 8:00 AM 10x60 TEC Finder incl. finderbracket and plate
    The T2 /1.25 focuser is shown as an optional accessory for the Vario. Can it be attached to the Vario with the supplied parts or any extra rings required ?. Can it be attached to both the 45 and 90 degree prisms?

    Answer rated: 1
    Both the body of the VarioFinder and the included prism both do have male T-threads, so you can simply remove the existing eyepiece clamp or the Polaris eyepiece, which is attached to the prism via the T-thread, and replace them with any of our T-2-focusers like the Baader Focusing Eyepiece Holder 1¼" / T-2 # 2458125.

    These focusers also fit onto all our T-2-prisms and mirrors, including the one supplied with the VarioFinder.

    So, you can easily replace e.g. the Polaris Crosshair-eyepiece with the Baader Focusing Eyepiece Holder 1¼" / T-2 # 2458125 and use your existing 1¼" eyepieces.

    You can also combine the Polaris with Baader Nose piece 1¼" / T-2 # 2458105 and use it with every other telescope.
    Answer by: Baader Web Team (Admin) on Jun 8, 2020 9:35:00 AM
  220. Rated: 1
    6/5/2020 10:11 PM Baader 10mm Hyperion 68° Modular Eyepiece
    I bought a Baader Hyperion 10 mm telescope IP's, and it came with a rubber attachment. No instructions. What is it and how do I attach it to the eyepiece?

    Answer rated: -1
    You are probably talking about the winged eyecup, which is especially for bino-viewing.

    You can see the whole scope of supply in the PDF "Hyperion eyepieces application examples" at
    https://www.baader-planetarium.com/en/downloads/dl/file/id/134/product/1210/hyperion_eyepieces_application_examples.pdf
    Answer by: Baader Web Team (Admin) on Jun 17, 2020 9:10:00 AM
  221. Rated: 1
    6/5/2020 5:51 PM Baader MaxBright® II Binoviewer with case
    Can this be used for terrestrial viewing using an 8" SCT? Will the image be upright / mirror imaged / upside down?

    Answer rated: 8
    The binoviewer itself does not change the orientation of the image from telescope. In another words you´ll have the same image with or without it when using an eye pice. Therefore we recommend an amici prism for terrestrical view:
    https://www.baader-planetarium.com/en/catalogsearch/result/?q=amici&___from_store=de
    Answer by: Baader Web Team (Admin) on Jun 8, 2020 2:52:00 PM
  222. Rated: 5
    6/5/2020 2:22 PM Baader 2" ClickLock eyepiece clamps (from T-2 to 4,1")
    What do I need to connect my SBIG ST-8300M to my CPC800XLT SCT? What will be the back focus of the ClickLock system?

    Answer rated: 7
    For the C925, you can use Baader 2" ClickLock SCL (3.3") clamp (C9¼" - C14") #2956233
    https://www.baader-planetarium.com/en/accessories/adapters-imaging-accessories/eyepiece-clamps/baader-2%22-clicklock-eyepiece-clamps.html#574=931
    to use any camera with a 2" nosepiece. It has got a length of 40mm. The ideal backfocus of a Schmidt-Cassegrain is about 5" (a little bit omre for the C925, see https://www.celestron.com/blogs/knowledgebase/what-are-the-optimum-back-focus-distances-for-celestron-scts
    So, to use it the perfect distance, you may want to get closer to this with an extension like Baader 2" ClickLock 47 mm extension #2956247 or some other extension tubes. But you'll reach focus without the extension, too.

    Celestron provides a T-adapter to SC which gives you the right distance, but it uses only the T-thread (M42x0.75) and will cause vignetting on a full-frame sensor (and is also calculated for a DSLR with 55mm flange distance.
    Answer by: Baader Web Team (Admin) on Jun 5, 2020 3:00:00 PM
  223. Rated: -2
    6/4/2020 6:35 PM Baader 2" Cool-Ceramic Safety Herschel Prism (Visual / Photographic)
    Can I use the BDSF sunscreen at the same time, to protect my lens from televue 85, and then put the herschell baader prism?
    Would it work well?

    Answer rated: 4
    When using the Safety Herschel Wedge, no additional front aperture filter is needed.
    Please also read the instructions for the Herschel Wedge thoroughly and only use this product if you feel well informed about the consequenzes of wrong handling.
    Answer by: Baader Web Team (Admin) on Jun 5, 2020 8:36:00 AM
  224. Rated: 0
    6/3/2020 8:43 PM Baader U-Venus-Filter (350nm)
    hello could you tell me if the characteristics are the best between 1.25 and 2 "for uv terrestrial imagery (uvivf)

    Answer rated: 0
    Sorry, we are not sure if we understand your question.
    Most camera chips and telescopes are already very insensitive in this spectral range - or optically not calculated for it.
    Therefore a purchase for UV-imaging has to start with a careful research to find out which imaging instruments are suitable. Unfortunately, we cannot take this research off your hands.
    Answer by: Baader Web Team (Admin) on Jun 8, 2020 2:41:00 PM
  225. Rated: 7
    6/3/2020 10:34 AM Baader 2" to 1¼" ClickLock Reducer (T-2 part #15B)
    I also have a Celestron Evolution HD 8 telescope. My diagonal is 1.25 inches. Can I install the 2 inch Clicklock as the telescope’s new visual back, immediately followed by the 2 to 1.25 inch Clicklock Reducer, then my 1.25 inch diagonal (regular non-Baader)?

    Answer rated: 2
    Yes, no problem - all standard 2" accessories fit into the 2" ClickLock, and all 1.25" accessorieries fit into the 2"/1.25" reducer.
    Answer by: Baader Web Team (Admin) on Jun 3, 2020 10:39:00 AM
  226. Rated: -1
    6/3/2020 9:08 AM 6,5 mm Morpheus® 76° widefield eyepiece
    My telescope is a Celestron NexStar Evolution 8 HD. I have a Morpheus 6.5 mm eyepiece and want to do eyepiece projection with a Celestron Neximage 10 camera. Page 2 of the Morpheus Instruction Manual lists required parts to do this but I don’t understand the multiple choice part selection I should consider. First, the camera is at the top with immediately below it either a Clicklock clamp 2458100 or a focusing eyepiece holder 2458125. Is there a purpose for choosing 2458125 which can move (also cheaper than the Clicklock clamp which doesn’t move)? Then there is a T-2 extension tube in three sizes. How do I determine which size to purchase (7.5, 15, 40mm)? I also have a Hyperion Zoom eyepiece and would the same choice of required parts apply to it?

    Answer rated: 1
    Please take a look at this PDF, where we describe the different camera adaptations:
    https://www.baader-planetarium.com/en/downloads/dl/file/id/444/product/2846/digiscoping_camera_adaptations_for_afocal_photography_and_eyepiece_projection.pdf

    There you will also find the formula which gives you the effective focal length which you reach with this method. It depends on the distance between eyepiece and sensor. Also, with a larger sensor like a DSLR, you need a larger distance, otherwise there will be distortions at the field of view. Also, the desired f/ratio depends on the pixel size of your camera; it shouldn't be slower than f/30; cameras with very small pixel even work best at f/10, otherwise the pixel size and the resolution of your camera don't match.

    So, you should determine the desired effective focal length and match the T-2-extensions to it. With a long-focal-length telescope like a Schmidt-Cassegrain, you'll probably prefer the Hyperion zoom over the Morpheus because of the resulting focal length.

    Both Morpheus and the recent Hyperion eyepieces require the M43/T-2-adapter #2958080.

    You can use both 1.25" clamps. The Clicklock gives a firmer grip, while you can better finetune the distance with the cheaper clamp - and it is especially interesting for focusing, so that you can avoid any mirror shift by telescopes like a Schmidt-Cassegrain.
    Answer by: Baader Web Team (Admin) on Jun 3, 2020 9:24:00 AM
  227. Rated: -1
    6/2/2020 10:54 PM Baader Q-Barlow 2.25x / 1.3x
    Please can you share the focal length of the q-barlow? Thanks

    Answer rated: 2
    The focal length is 45,5 mm.
    Answer by: Baader Web Team (Admin) on Jun 3, 2020 4:21:00 PM
  228. Rated: -1
    6/2/2020 3:53 PM Baader 36mm Hyperion Aspheric 2" Eyepiece
    Can this eyepiece be used in "eyepiece projection" configuration as telecompressor (speed booster)? I need to fit moon from my Celestron C11 on an APS-C sensor (~14mm diam Moon)

    Answer rated: 0
    No, eyepiece projection will always increase the effective focal length and give you a higher magnification.

    You need a Telecompressor like the Alan Gee # 2454400 - but even there with a factor of .59, the moon would probably be slightly too large with a focal length of 1652mm. You can increase the reducing factor by increasing the distance with additional T-2 extension rings, but the image circle will also become smaller. The image circle of the Alan Gee is 15mm, so it should just work - but this so close to the edges of the specifications that it should be tested at the moon - and it can make a difference if the moon is in apogee or perigee.

    But you can use the Hyperion 36mm, attach a smartphone e.g. with the Celetron NeXYZ smartphone adapter and use your smartphone camera to take pictures of the complete moon.
    Answer by: Baader Web Team (Admin) on Jun 3, 2020 8:52:00 AM
  229. Rated: -3
    6/2/2020 4:59 AM Glasspathcorrector 1:1,25 for Baader-Binoviewer with T-2 thread (MaxBright® II and MaxBright®)
    Is it possible to screw a 1.7x GPC into the front of my 2” T2 diagonal? I currently turn it into the Maxbright II, but that results in just 1.45x. I’d like to move it forward, in front of the diagonal, in order to increase the power. I can’t change the 2” nosepiece because that would require me to add adapters (and light path) to my Tak in order to use a 1 1/4” diagonal nosepiece.

    Answer rated: 1
    You can insert the GPC in our 2"/T-2-nosepiece, if you still have the plastic ring which is included with the GPC. This will give you a higher magnification and is described on page 13 of the manual:
    https://www.baader-planetarium.com/en/downloads/dl/file/id/1614/product/4317/manual_baader_maxbrightr_ii_binoviewer.pdf

    Depending on the GPC (T-2 or Zeiss microbayonet), you may have to turn the lens package around.

    You can change the configuration of the 1.25x and 1.7x GPCs, so that the wide rim of the body faces either towards the eyepiece or the telescope. This way, you can install the lens element in such a way that the convex lens faces towards the telescope as indicated in the small sticker included with the box and shown on top of this page. To do so, you must remove the lens package from the body and install it the other way round.
    Answer by: Baader Web Team (Admin) on Jun 2, 2020 3:25:00 PM
  230. Rated: 0
    5/31/2020 6:26 PM Telecentric System TZ-4 (4x focal length)
    Hi, I'm thinking of buying the Telecentric System TZ-4 (or possibly a TZ-3) where my telescope is a Lunt 100mm H-alpha Double-Stacked. Would you also recommend that I purchase the M68 Tele-Compendium? In truth, I'm not entirely sure of the purpose of the M68 other than to provide the necessary tube extensions to ensure the TZ-4 reaches focus.
    Many thanks for your help.

    Answer rated: -1
    This depends on the weight which you are going to attach to the Telecentric.

    The TZ4 provides a T-thread on the camera side and a 2" nosepiece on the telecope side. If this connection is strong enough to keep your accessories in place without flexing, you don't need the M68 Telecompedium. But a simple eyepiece clamp may be to small for a long adapter system like an H-alpha filter with a binoviewer or a heavy camera, so to avoid flexure, there is the M68-system, which can be attached to the focuser with a screw connection (if the focuser provides the matching threads). Then, flexing can only be caused by the focuser – and those with M68-threads are usually designed for heavy equipment.

    If you have problems with flexing, you should give the Telecompendium a try.
    Answer by: Baader Web Team (Admin) on Jun 3, 2020 8:16:00 AM
  231. Rated: 2
    5/28/2020 11:42 PM Baader Wide-T-Ring Sony Alpha and Minolta Maxxum with D52i to T-2 and S52
    I own a sony alpha 900 full frame camera. I have got a normal T2 adapter with a 2" out, and I have noticed some vignetting. I Wonder if using this "Wide versión" would eliminate the vignetting.
    Would I need a different T2 to 2" adapter?
    Also I am going to use a mpcc III coma corrector. Will I need something else to avoid vignetting as well with the corrector?

    Answer rated: -1
    Please check the manual of your camera – Sony uses two different bayonets; if you camera uses the E-bayonet, you need this T-ring:
    Baader Wide-T-Ring Sony E/NEX Bayonet with D52i/M48 to T-2 und S52 # 2408317

    On its product side, you can see the difference between T-2 and M48:
    https://www.baader-planetarium.com/en/accessories/adapters-imaging-accessories/camera-adapters/t-rings-wide-and-classic/baader-t-ring-sony-enex-bayonet-with-d52m48-to-t-2.html

    Due to mechanical limitations, on some cameras, the free aperture is still limited to 41mm, while e.g. Canon uses a wider bayonet and offers up to 48mm of free aperture. To maximise the free diameter, you need another 2" nosepiece: 2" / S52 Nosepiece # 2958551

    So, a wide T-ring will remove vignetting as much as possible, but on some camera brands the camera bayonet is the bottleneck, not the T-2-thread. Please check the free aperture of your camera and the corresponding Wide-T-ring for further details.

    Please also check the complete optical length – the Wide-T-rings do not all provide the standard T-2-flange distance of 55mm, so you may need some spacers. (This was done to make them work with configurations where you need to fight for every millimeter.) You can see the differences by comparing their optical length to that of the standadr T-ring, the data is given in the technical data of each T-ring.
    Answer by: Baader Web Team (Admin) on May 29, 2020 10:31:00 AM
  232. Rated: 1
    5/28/2020 10:59 PM 2" MPCC Mark III (Multi-Purpose Coma Corrector for Newtons)
    I am interested on 2" MPCC Mark III Coma corrector, but I have a Sony Alpha 900 Full Frame camera. Even though I understand I can use it "as it comes" with some vignetting, I wonder what else would I need in order to fit it not with the normal T2 but with the 48mm option to get (supposely) full coverage.
    I have seen that the T2 adapter I already have include something very similar to this (https://www.baader-planetarium.com/en/baader-m48-spacer-ring-for-mpcc-iii--protective-eos-t-ring.html), so I wonder if I can just use the T2 adapter I have without that, or if I would need a different one, for example "Baader Wide-T-Ring Sony Alpha and Minolta Maxxum with D52i to T-2 and S52" (not sure if this is the one I have)
    I am afraid once I have ordered the corrector I might end up needing something else...

    Answer rated: 2
    This will probably not work, because the diameters of the insets of T-rings are not standardized – the adapter ring will probably not fit into your existing T-ring.

    Vignetting which is caused by the T-thread (M42x0.75) can be removed with a Wide-T-Ring, but it may also be caused by the camera bayonet, so please check if a wider T-ring will actually be of use, or if the camera is the problem.

    Please also note that Sony uses two bayonets, one is compatible with Minolta and the other one is the E-bayonet.
    Answer by: Baader Web Team (Admin) on May 29, 2020 10:49:00 AM
  233. Rated: 1
    5/27/2020 8:10 PM Baader 2" ClickLock Diagonal Mirror
    Will it work for deepsky use?

    Answer rated: 1
    Yes of course, many of our customer use this mirror not only for solar observation but also for deepsky.
    More information on our prisms and mirrors can be found here: https://www.baader-planetarium.com/en/downloads/dl/file/id/1617/product/1687/baader_star_diagonals_t_2_and_2.pdf
    Answer by: Baader Web Team (Admin) on May 28, 2020 8:34:00 AM
  234. Rated: 1
    5/27/2020 5:04 AM Baader Sky Surfer V (Night & Day Design) Red-Dot-Finder
    What is the thread size on the alt-azimuth adjusting screws? I find it cumbersome using to use a coin or screwdriver in the dark to make the adjustments and would like to replace them with something that can be turned without a too. But I don't know what is the proper thread size.

    Answer rated: -2
    We are sorry - this is another reminiscence concerning the origin of this product. This product was once meant to be used on a gun - and be adjusted one time.
    Hence the set screws are "well hidden" and only accessible w. some effort. At this time we have not changed this part of the design and we do not have any replacement av. for this thread.
    However - we are thankful for this piece of kind criticism and will try to address this with future productions - however - the next one is already in the makes.
    Answer by: Baader Web Team (Admin) on May 27, 2020 3:43:00 PM
  235. Rated: -2
    5/25/2020 6:41 PM M68 to 2" UNFi Conversion Ring
    do you know if my TS Optics Photoline reducer/corrector 0,79x, 2" would fit in to your M68 to 2" UNFI Conversion ring?
    I also don't know what UNFI stands for.
    Thank you!

    Answer rated: 2
    If your corrector has got a male SC thread, it should fit without problems.
    The "i" in UNFi stands for internal or female thread, and UNF is the thread standard. This thread may be better known as 2" SC-thread, as it is the standard thread used on the smaller Schmidt-Cassegrains.
    If you need a male thread, there is also Baader 2"/2" Inverter Ring with 48mm filter thread # 1508020
    Answer by: Baader Web Team (Admin) on May 26, 2020 10:29:00 AM
  236. Rated: 2
    5/24/2020 6:07 PM 2" BDS-RT Baader Diamond Steeltrack Focuser
    Do you have an M117x1 adapter for the 2" BDS-RT focuser?
    This is to go onto a 10" GSO RC telescope.
    Also, what is the thread type on the back (the mount thread)?
    Thank you.

    Answer rated: -3
    Actually this focuser is made to use on a refractor telescope. The inner tube of this focuser has a diameter 63mm so please check if it can intrude
    your OTA. A drawing of this focuser you can see here:
    https://www.baader-planetarium.com/de/downloads/dl/file/id/28/product/2858/bds_rt_dimensions_technical_drawing.pdf
    At the time we don´t have an adapter to direct mount the focuser to M117. Please contact your dealer from where you bought the OTA to find an
    adapter - so far I can see several adapter are already available at TS.

    Usually this focuser will be used with cassegrain type telescopes:
    https://www.baader-planetarium.com/en/accessories/telescope-accessories/focusers/baader/2%22-bds-sc-baader-diamond-steeltrack.html
    https://www.baader-planetarium.com/en/downloads/dl/file/id/29/product/2856/bds_sc_dimensions_technical_drawing.pdf
    Answer by: Baader Web Team (Admin) on May 25, 2020 9:15:00 AM
  237. Rated: 1
    5/21/2020 11:12 PM Baader 2"/M68/3.3" Ultrashort 2" clamp for C11/C14/Meade SC´s
    The description says this is the same as 2458196 + 2408145. I already have 2956233 (ClickLock clamp for 3.3" SCL), which I think includes the 3.3" nut (2408145), but I don't see how to attach the ultrashort clamp (2458196) to the nut (2408145) when purchased separately, because the nut has a dovetail connection and the clamp has a threaded connection. Is there another adapter that's needed to attache the two?

    Answer rated: 1
    Unfortunately this was an error in the description which was discovered very recently actually and corrected in the specifications and german description. But apparently we forgot to change the english description. The description has now been updated with the following text, hopefully this clears it up. Sorry for the inconvenience! Here is the text:

    Please Note: The Ultrashort clamp installed in this adapter #2458197 is not identical to the Ultrashort 2" Eyepiece clamp M68 / M60 (#2458196) which is available separately. The adapter #2458197 uses an older type of clamp #2458196, which can be recognized by the fact that it has only two knurled screws, while the individually available clamp has three screws. In contrast to the M60 thread of the #2458196 adapter, the older clamp used here has a ring dovetail on the telescopic side to accept the included 3.3" connection thread (T-2 component #18) (#2408145)
    Answer by: Baader Web Team (Admin) on May 25, 2020 11:43:00 AM
  238. Rated: 1
    5/21/2020 11:04 PM Baader UFC T-2 (m) Camera-Adapter (optical height: 2 mm)
    Is there a version of this with female thread? My camera, when configured for 6.5mm back focus, has male thread. Adding an f-to-f adapter on top of this one puts me over the max back focus.

    Answer rated: -1
    Unfortunately no - it has been standard for decades that a camera has got a female T-thread. Only recently, the first manufacturer has started to put male T-threads onto the cameras. At the moment, we don't have a female, camera-sided UFC-adapter.
    Answer by: Baader Web Team (Admin) on May 23, 2020 1:03:00 PM
  239. Rated: 1
    5/21/2020 2:29 AM Baader Wide-T-Ring Nikon Z (for Nikon Z bajonet) with D52i to T-2 and S52
    OK, A bit confused re the products I need.
    I wish to connect my Nikon Z6 to my Astro-Physics 130 GT, with the 2.7" focuser. I have purchased the Wide T ring for the Z camera, as well as the universal filter changer. I am not using a reducer or field flattener. What else do I need to purchase?

    Answer rated: 2
    You need a matching camera-sided adapter ("back plate") for the UFC; there are several options

    The best would be
    Baader UFC S52 dovetail camera-adapter #2459119
    which fits directly to the Wide T-Ring, if you remove the T-2-inset from the Wide-T-Ring (there should be an Allen key included with the T-ring to do this). This gives you the widest free aperture and a permanent connection to the UFC, so it's probably the best if you attach the UFC to your telescope with a 2" nosepiece.

    If you prefer a screw-coupling, you can also replace the T-2-inset of the Wide-T-ring with the optional
    Reducing piece S52 / M48 # 2958552
    and combine it with
    Baader UFC M48 (m) Camera-Adapter # 2459116
    This lets you use the full diameter of a 2" nosepiece or filter, and you can easily unscrew the camera from the filter holder

    Otherwise, you can use the
    Baader UFC T-2 (m) Camera-Adapter # 2459115
    for a screw-coupling.
    This is the standard solution as it was used for years, but you are limited to about 40mm of clear aperture because of the T-2-thread – so, if you use a full frame camera, there will be some vignetting at the edges. It's fine for APS-C and smaller sensors.

    Answer by: Baader Web Team (Admin) on May 23, 2020 12:17:00 PM
  240. Rated: 4
    5/20/2020 9:14 PM Baader Color Filter-Set Moon and Planetary (6 colors)
    Does the 2" Filter Set (2458310) come with six of your stackable filter cases (2459253)? The picture of the set on your website shows non-stackable clamshell cases which may just be an old photo. I just want to me sure if I order the set from USA distributor Alpine Astronomical (SKU: FCFS-2) that it will come with the stackable filterboxes. Thanks!

    Answer rated: 0
    Yes, the 2" filter set does come with our stackable filter cases. It is correct that the picture on our website was outdated, apologies. We have removed it from the product page.
    Answer by: Baader Web Team (Admin) on May 25, 2020 1:27:00 PM
  241. Rated: 1
    5/19/2020 6:56 PM Baader Tripod Adapter Flange for NexStar SE / EVO
    Is the center hold 3/8" thread?

    Answer rated: -1
    It is a standart metric M10 thread.
    Answer by: Baader Web Team (Admin) on May 20, 2020 4:45:00 PM
  242. Rated: -1
    5/19/2020 6:48 PM Baader Tripod Adapter Flange for NexStar SE / EVO
    Will this adapter work with the Celestron Evolution tripod? Just wanted to be sure. I wasn't sure if "Evo" in the description was short for "Evolution."

    Answer rated: 3
    No, it is meant that you can set this adapter on a Baader T-Pod tripod or Baader Short Pillar III with Universal Base-Ring. With this flange you can
    find an alternate to the original Celestron Evolution tripod.
    Answer by: Baader Web Team (Admin) on May 20, 2020 4:49:00 PM
  243. Rated: 2
    5/13/2020 6:19 PM Baader U-Venus-Filter (350nm)
    Hello, what's the actual size of your 1(1/4)" filters in "mm"?
    I have a Samsung lens 20-50mm, that is a 40,5mm. Can I use this filter size our I need a adapter? If I need a adapter... What adapter is suggested for this lens? Thank you.

    Answer rated: 3
    There is no standard for 1.25"-filters, common threads are
    M 28,5 x 0,50mm
    M 28,5 x 0,60mm
    1 1/8 Zoll x 40 GpZ
    We have designed our filter cells to work with almost any eyepieces and filter holders, so while the thread diameter is 28,5mm, the thread is something special.

    We do not have an adapter for 1.25" filters to camera threads, only for 2" filters, as the smaller filters are too small for most cameras. There, you need
    #2408166 Baader DSLR 2" Filter-Holder M48 / SP54: https://www.baader-planetarium.com/en/baader-dslr-2%22-filter-holder-m48sp54.html
    This fits to the M54-filter thread of camera lenses.
    Based on the SP54 thread, we offer many more adapters for various camera threads, our so-called Hyperion DT-rings. https://www.baader-planetarium.com/en/catalogsearch/result/?q=sp54

    Answer by: Baader Web Team (Admin) on May 18, 2020 11:00:00 PM
  244. Rated: 2
    5/13/2020 10:59 AM Baader 8mm Hyperion 68° Modular Eyepiece
    I have a Celestron Regal M2 80 mm spotting scope and was interested in buying some fixed focal length eyepieces to add to my original Celestron zoom eyepiece.

    I read on the Baader-Planetarium.com website that some spotting scopes have difficulty getting infinity focus with your Baader Hyperion eyepieces and therefore, with your 8-24 mm zoom eyepiece, additional (spacer ) rings are provided to achieve this.

    The website specifically refers to Celestron Ultima spotting scopes. Do you know if this is also the same with Celestron Regal scopes or not?

    If it is, can these rings [a] be purchased and [b] will they fit on your other Baader Hyperion eyepieces?

    I was specifically interested in the Baader Hyperion 68 degrees 8 mm and the Baader 31/36 mm Hyperion Aspheric eyepieces.

    Answer rated: 1
    Astronomical eyepieces have to come close to a spotting scope. The Hyperion Zoom Mark IV is designed to be compact enough, so these rings shorten the body of the eyepiece. Unfortunately, they only fit onto the Hyperion Zoom Mark IV.

    The Hyperion Aspheric (31 and 36mm) will not work with any spotting scope as their 1.25"-adapter is too long. The 8mm will work without any problems (as well as all HYperions except the 5mm and the discontinued 3.5mm), but it provides the same magnification as the original eyepiece from Celestron. The 5mm will probably not work, at least it doesn't work with the Zeiss Diascope spotting scopes.

    On the other hand, all our newer eyepiece lines (the Morpheus and the Classic Ortho/Plössl) will work with your spotting scope out of the box.
    Answer by: Baader Web Team (Admin) on May 13, 2020 4:16:00 PM
  245. Rated: 0