Most Recent Product Questions
  1. Rated: 0
    4/17/2021 11:26 PM Rubber/Metal foldable Morpheus® eyecup (M43-threaded)
    Need an left eyecup for busnell 13-2410 10/42 power

    Answer rated: 0
    We are very sorry, we do not offer these eyecups
    Answer by: Baader Web Team (Admin) on Apr 19, 2021 9:00:00 AM
  2. Rated: 0
    4/14/2021 9:52 PM Zeiss-Diascope Bayonet 1¼" eyepiece adapter
    Will this, or another, 1.25" adapter fit a Vortex 85mm UHD Razor spotting scope? Thanks, David

    Answer rated: 0
    We are sorry this will not fit and we do not offer an adaptor for 1,25" for this Spotting Scope
    Answer by: Baader Web Team (Admin) on Apr 15, 2021 8:23:00 AM
  3. Rated: 1
    4/12/2021 9:06 PM Fluorite Flatfield Converter (FFC) / 3x-8x
    In follow-up to my first question, please tell me the mechanical length of this device, really its optical length in mm from mating surface to mating surface excluding the protruding threads. The charts you mentioned do not provide this information, and I need to determine if there is sufficient backfocus distance on my optic to install it.

    Answer rated: 1
    The mechanical length of the 2" plug-in sleeve is 55mm (measured from the ribbed stop ring down)
    Answer by: Baader Web Team (Admin) on Apr 13, 2021 12:43:00 PM
  4. Rated: 0
    4/12/2021 12:33 AM Baader UFC S70 / C11/C9.25 Hyperstar, SC, HD Telescope-Adapter (optical height: 4,1 mm)
    I have a hyperstar 9.25 and a QHY 294c. This adapter (Baader UFC S70 / C11/C9.25 Hyperstar, SC, HD Telescope-Adapter), the baader UFC, and the Baader UFC T-2 (m) Camera-Adapter is enough to have good backfocus?

    Answer rated: 0
    We already published the important data how to find out the right adaption, please see <<Important note on Hyperstar-Adaptation>>
    Just substrackt from the 60,4mm back focus length the camera (17,5mm) so you see that you have 42,9mm left for the UFC.
    #2459132 is 4,1mm
    #2459110 is 13mm
    #2459115 is 2mm
    These would be the Items you´ll need anyway but still 23,8mm left to bridge with extenders like:
    2459141 is 5mm
    2459145 set to 18,8mm

    Answer by: Baader Web Team (Admin) on Apr 19, 2021 11:10:00 AM
  5. Rated: 1
    4/9/2021 5:17 PM Baader SC / HD Ultra Short T-Adaptor, 7mm optical length
    I have Celestron Evolution 8 EdgeHD scope with a 2" SCT thread on the rear cell. I am struggling to find the correct model diagonal for that rig, can you please provide additional information? I read the primer helpfully provided, but there are two options that are both recommended, the SCT-Clicklock visual back + the clicklock diagonal CLDIAG-2, and the same diagonal but this time mounted somehow flush on rear cell. Which is actually better? The eyepiece I was most is my Mark IV 8-24mm Zoom w/Barlow combo, if that matters.

    Answer rated: 0
    The ideal backfocus of the Edge HD 8 telescope is 133,35mm behind the 2" thread on the rear end. The closer you come with the eyepiece field stop to this point, the better is the star image on the edges of the field. The mirror has 112m optical length. The ClickLock 2" clamp for the rear end of the telescope has 47mm optical length. Means either way works similar good, you are always a little more tahn 20mm from the ideal focus point, wich is not an issue for visual observation with this telescope, especially not when observing with high magnification. When attaching a camera, you will need to take care that you are exactly in the right distance with the CCD sensor, as described in the manual of the telescope.
    Answer by: Baader Web Team (Admin) on Apr 13, 2021 9:15:00 AM
  6. Rated: -1
    4/9/2021 4:34 PM Diamond Steeltrack® T-2 Adapter
    Can i use this with a coma corrector threaded to the telescope side?

    Answer rated: 0
    Unfortunately we don´t know a combination with a coma corrector that will fit. Coma Correctors like our MPCC have 2" barrel to come in the right place in the optical path. And they provide a different thread on the camera side that is not fitting to this adaptor
    Answer by: Baader Web Team (Admin) on Apr 13, 2021 8:16:00 AM
  7. Rated: 0
    4/9/2021 2:34 PM Steeldrive II motor focuser with Controller
    Great product! Is it possible to control the motor directly from an astrophotography software on the PC using the RJ-45 connector and an Ethernet cable (PC => Ethernet => motor), without going though the controller (PC => USB => controller => Ethernet => motor)?

    Answer rated: 0
    Thank you! Unfortunately you cannot connect the motor directly to a PC program, you always need to go through the SteelDrive controller
    Answer by: Baader Web Team (Admin) on Apr 13, 2021 8:20:00 AM
  8. Rated: 0
    4/7/2021 10:20 PM 2"a / T-2i Zero-length reducing piece (zero optical length)
    May I use the 2"a / T-2i reducing piece to connect a 2" / 90° Astro Amici-Prism diagonal in a T2 quick changer system?

    Answer rated: 1
    Even if it mechanically is possible, it will have one big disadvantage: T-2 has 42mm aperture, 2" Is 50mm. Means, you step down the aperture of the prism so that you will experience a vignetted field when viewing with long focal length eyepieces
    Answer by: Baader Web Team (Admin) on Apr 8, 2021 9:18:00 AM
  9. Rated: 0
    4/7/2021 12:37 PM 2" BDS-SC Baader Diamond Steeltrack® Focuser
    I have an ETX-125 (Mak) with a Wegat back. The output port is technically an SCT thread 2-24 (2’’ diameter, UNF 24 thread).
    I also own a Diamond Steelrack SC which has a 2’’ 1.0 (metric) thread.
    The threads are incompatible despite both being called SCT.
    Do you sell an adapter from thread UNF24 to 1.0 ? otherwise what are my options ?

    Answer rated: 0
    The ETX 125 is a MAK (Maksutov Cassegrain) and not an SC (Schmidt Cassegrain). These are different optical and mechanical system. Therefore both have different threads on the rear end - and most accessories that are especially designed for SC do not fit to MAK telescopes. This is the case for our SteelStrack Focusers. The MAK has not enough focus travel in the focusing mechanism to move the focus far enough out to get a sharp image when the SteelTrack is attached. Therefore we do not offer adaptors for attaching the focuser to the MAK - it simply makes no sense, the combination will not work. Unfortunately we do not know about another focuser that works on an ETX MAK
    Answer by: Baader Web Team (Admin) on Apr 7, 2021 2:24:00 PM
  10. Rated: 0
    4/6/2021 4:09 AM Baader 2" ClickLock eyepiece clamps (from T-2 to 4,1")
    I have a BAADER CLICKLOCK for SCT that I would like to convert for an Explore Scientific 80ED APO Refractor. Can I buy separately the adapter for that?

    Answer rated: 1
    Most of the adapters inside of the ClickLocks are not sold seperately, and the ClickLocks bodies are not all the same. But we do have have several SC-adapters, maybe one also fits to your telescope and the the SC-ClickLock: https://www.baader-planetarium.com/en/accessories/adapters-imaging-accessories/2-inch-sc-thread.html
    Answer by: Baader Web Team (Admin) on Apr 6, 2021 12:44:00 PM
  11. Rated: -1
    4/5/2021 7:48 PM QHY 5-III-462C Expansion Kit
    Can I mount QHY 5-III-462C Expansion Kit on a QHY5L-II-C camera?

    Answer rated: 0
    Yes, this works!
    Answer by: Baader Web Team (Admin) on Apr 6, 2021 4:47:00 PM
  12. Rated: 0
    4/3/2021 4:09 AM Ultrashort 1¼" / T-2 Clamp
    If this is attached to the T-2 1C prism diagonal, will the nosepiece of a 1.25" eyepiece touch the prism surface? I'm concerned because the measured nosepiece length is 26mm, while the stated length of this clamp is only 20mm.

    Answer rated: 0
    If you add the depth of the housing, it is 25 mm - then one or two M42/T-2 spacer rings must be used.
    Answer by: Baader Web Team (Admin) on Apr 7, 2021 9:51:00 AM
  13. Rated: 0
    4/2/2021 1:10 PM Canon Astro Upgrade for all Canon APS-C DSLR-Cameras
    do you convert EOS 500D? ACF or BCF? any expected time for conversion?

    Answer rated: 0
    EOS 500 is APS-C therefore we can convert. Its BCF filter. Handling time is around 4-6 weeks
    Answer by: Baader Web Team (Admin) on Apr 6, 2021 10:31:00 AM
  14. Rated: 0
    3/29/2021 4:03 PM Universal Alan Gee II - Telecompressor (UAG II)
    I would be interested in using the UAG II with my conventional C9.25 for monocular observations. I would use it as suggested, i.e., replacing a 2" mirror diagonal's nosepiece with the UAG II, and inserting it into a 2" Clicklock visual back. In this way, the 1.25" eyepiece would be at the nominal distance of ~121 +/- 1 mm from the reducer.
    However, some users claim that the UAG II causes aperture loss in this configuration, i.e., the light cone hitting the secondary would be too wide and thus cropped, due to the primary being pushed forward too much in order for the telescope to reach focus with the reducer.
    My question is: is this true, and if yes, what would be the amount of the aperture loss? Also, do the UAG II and the original Alan Gee Mark II differ in this respect (the latter being inserted further up into the baffle tube)?

    Answer rated: 2
    The new UAG II is entirely a visual product, only intended for use with the Maxbright II binocular viewer. It is not intended to be used on its own for monocular observation, but for easy, comfotable use with the binoviewer

    It is likewise NOT intended to work in front of a 2" star diagonal but only directly in front of the binocular viewer.

    Absolutely any telecompressor causes "aperture loss". But not because it would crop the incoming beam, but because it does what the name says - it "compresses" the beam to become smaller in diameter. So, you get a smaller, brighter image.

    At the distance of 121 mm the fully illuminatred field circle would be 18 mm and this is mercilessly visible in a CMOS-camera. The light fall off is so slow though that the human eye hardly notices the vignetting until the image circle has reached a diameter of ~23 mm. This is the reason why it is a joy to use with the binocular viewer and 1.25" eyepieces (which have field stop diameters of less that 26mm, and many binoviewers have even smaller prisms), but NOT with 2" eyepieces. Many eyepieces btw. work with this "vignetting trick"to -virtually- sharpen the outermost edge of the field. Check the web for TV-Plossel eyepieces of the first generations which used this "design feature" already 30 years ago.

    Vignetting of UAG II and AG II are the same. The AG II was designed around the same time as the TV-Plossels. This was the time of emulsion films hundreds of times less sensitive than modern CMOS-cameras, and when 2" eyepieces did cost a fortune. Please do not try to pursue your project using the AG-lens principle for applications it was not intended for.

    For a larger monocular true field of view, we'd recommend a 2" eyepiece like the Hyperion 36mm (the field stop diameter and thus the true field of view is comparable to thos of 2" eyepieces with even longer focal lengths, but the apparent field of view is much larger). If you aim for a brighter image with 1.25" eyepieces, then the UAG (in the standard version, which offers more options for configuration) is the better choice.
    Answer by: Baader Web Team (Admin) on Mar 30, 2021 1:36:00 PM
  15. Rated: 0
    3/27/2021 6:40 PM StarAid Revolution Standalone Autoguiding - Revision B
    Does I need to buy an adpater (like 1"1/4 - C-mount adapter) between my QHY miniGuideScope and Staraid Revolution B (my last order) ?
    Thanks in advance for your response

    Answer rated: 0
    Can you advice and sell an adapter between male C-mount of the back of QHY miniGuideScopre(As this guidescope has not a 1.25" back) and the female thread of the front of StarAid camera ?
    Answer by: Georges Carletti on Apr 1, 2021 1:00:14 PM
    Answer rated: 0
    back of QHY: male 1"-32 threads per inch
    front of staraid: female M28.5 x 0.6
    adapter must be the opposite
    Answer by: Georges Carletti on Apr 1, 2021 5:00:41 PM
    Answer rated: -2
    You don't need an additional adapter - the StarAid has got a 1.25" body and fits into the 1.25" eyepiece clamp of the MiniGuideScope.
    Answer by: Baader Web Team (Admin) on Mar 29, 2021 11:57:00 AM
  16. Rated: 2
    3/26/2021 11:27 PM Baader 24mm Hyperion 68° Eyepiece - Non Variable
    I'm curious what wavelength range the Hyperion line of eyepieces is corrected over as well as the metric for image quality. Since these are taking the image from the telescope and re collimating it to be imaged by either a camera or the eye, I'm curious what practical resolution can be achieved assuming the systems on either side are 'perfect'. Put another way, what would be the spot size at the focal plane if collimated light were sent in to the eyepiece backwards?

    Answer rated: 1
    Spot sizes entirely depend on the telescopes optical design the eyepiece is being used with. If you were to choose an ultrafast Newtonian design for comparizon against a medium focal length refractor, the spot sizes off center caused by the Newton would cause you to wail.

    Eyepieces painstakingly try to be a "good compromize" for as many telescope designs as possible. If this task is executed well the product will sell.

    Across the last thirty+ years we managed to not make major mistakes in our own designs and we had the best masters ever possible during the time when we could participate in the design of the ZAO I and ZAO II improved Orthos at CarlZeiss Jena. We do own these designs and it was a major help to learn judging how to "weigh" different design principles. We are thankful for this - but we will not give away the intellectual property gained in this hard way.
    Answer by: Baader Web Team (Admin) on Mar 30, 2021 9:48:00 AM
  17. Rated: 1
    3/25/2021 8:10 AM Glasspathcorrector 1:1,25 for Baader-Binoviewer with Zeiss ring dovetail (MaxBright® II and Mark V)
    Whats the main difference between 2456314Z & 2456314? Can the Zeiss dovetail version also be used in the reverse configuration (eg threaded into the T-2 prism)?

    Answer rated: -2
    The only difference is the way the lens package is mounted inside the filter cell. This is because the 1,25x and 1,7x GPCs are mounted differently for the MaxBright I bino and for the Zeiss Giant bino.
    You can open the filter cell, take the filter cell out and put it back into the filter cell again to change 2456314 into 2456314Z or vice versa.
    The 2.6 cannot be reconfigured, but works the same for all binoviewers.
    You can find more information in this PDF: https://www.baader-planetarium.com/en/downloads/dl/file/id/114/product/1255/baader_glaspathcorrectors_for_binocular_viewers.pdf
    Answer by: Baader Web Team (Admin) on Mar 29, 2021 11:38:00 AM
  18. Rated: 0
    3/25/2021 1:43 AM Fluorite Flatfield Converter (FFC) / 3x-8x
    Two questions: 1. What is the mechanical/optical length of this item, so that I can calculate distances vs. available backfocus of my optic. (I will use an M63-T2 ring of 3mm optical length and the available backfocus is 93.48mm.)

    2. I have an APO astrograph (WO Star-71II). Since its field is already flat, is this item suitable or will it over-correct the field flatness?

    Thank you.

    Answer rated: -1
    We have got two plots in the product images - one is a plot showing the magnification depending on the distance from camera to sensor, and the other one is a schema showing the focal distances, where L is the distance from the FFC to the original focal point of the telescope, and L' is the resulting focal plane with the FFC. It depends on the magnification factor.

    You can also find it in the PDF "FFC Focal Distances" in the tab Downloads.

    It is hard to predict if the field curvature will be over-corrected, but it should be no problem - but as always when combining severalt optics, exactly that combination should be tested.
    Answer by: Baader Web Team (Admin) on Mar 30, 2021 1:45:00 PM
  19. Rated: -2
    3/24/2021 11:56 PM Baader DSLR-2" Filter Holder M48/SP54
    I want to get your 2" High Speed filters for my Canon 400mm f/2.8 USM L ii prime DSLR lens & to share with my soon coming RASA. The "Canon 52 (Wii)" Drop In filter universal size is 52mm filter size and 48mm thread - Which adapter do I need to adapt to my Canon drop in...and is the full diameter of your 2" high speed filters under 52" (or it won't fit in the drop in casing)?

    Answer rated: 1
    This might work out of the box - our filters do have an external diameter of ca. 50mm and use a thread of about M48x0.75 - the 2" filter thread is not really standardized, so we make our filter threads compatible with as many manufacturers as possible. So, chances are good that they will also fit to Canon. For the UFC, you need the Baader UFC 2" (M48) Filter Slider # 2459112
    The height of the filters without thread is 6mm.
    Answer by: Baader Web Team (Admin) on Mar 29, 2021 11:32:00 AM
  20. Rated: 1
    3/23/2021 6:38 PM Baader Standard Base - for MQR III&IV, for Witty One & for V-Bracket
    I have 4mm holes in tube 36mm apart, I think this works for hole spacing 27-45? My problem could be the distance of hole centres from tube flange, it is 18mm clearance behind. So, what is front to back length of the base? I have an old clamp that's 35mm, it fits only just by fraction of millimeter!
    Thanks.

    Answer rated: 2
    The distance of the holes fits, no problem.
    The length of the clamp is 36mm, with the holes exactly in the middle.
    Answer by: Baader Web Team (Admin) on Mar 24, 2021 12:12:00 PM
  21. Rated: 0
    3/23/2021 6:27 PM Baader MaxBright® II Binoviewer with case
    Interestingly, everywhere I read that binoviewers don't require any focal point adjustments for Maksutov telescopes, yet I read you recommend one. My Mak is f/15, so buying Maxbright 2 will cost extra accessory?

    Answer rated: 0
    As a rule of thumb, you do not need a glasspath corrector for telescopes with focal ratios of f/10 or slower. On a Mak or Schmidt-Cassegrain, it is usually also not necessary to reach focus. So, you are probably fine without a glasspath corrector. However, some observers notice an improvement when using a gpc - although we are not sure if this is just because of the additional magnification or because of increased image quality. But that's the reason why we recommend a gpc even for Schmidt-Cassegrains and similar telescopes - but it is only a recommendation, it is not a necessity.
    Answer by: Baader Web Team (Admin) on Mar 24, 2021 12:14:00 PM
  22. Rated: 0
    3/23/2021 10:41 AM Alan Gee Telecompressor Mark II (T-2 part #20)
    I’m looking for the widest fov out of C8 for visual use. I see you recommend having the UAG for visual use, but concerning using the stock sct-1.25” visual back and 1.25” diagonal wouldn’t the 2” size of the UAG be too big to fit? And the t-2 thread is also useless in this configuration?
    Wouldn’t the original Alan gee be much better fit for such configuration? Considering it sits inside the baffle and the stock visual back is used as the locking screw of it.
    Also, using your 31/36 aspheric, wouldn’t using the original Alan gee allows to screw the eyepiece to the sct thread with the Alan gee In it’s place? And In general , which is more suitable for C8 with/without focal reducer, the 31 or the 36?
    Thanks in advance

    Answer rated: 0
    The main purpose of the UAG is to easily adapt a binoviewer, especially for telescopes upgraded to a 2" eyepiece holder like our 2" ClickLock..

    A telecompressor can't really give you a wider field of view, it only gives you a wider field of view with the same camera sensor. It is usually better to use an eyepiece with a longer focal length and a larger field stop for visual use than to use a telecompressor.

    With a Schmidt-Cassegrain, the inner baffle limits the usable field of view, as it has got a diameter of 37mm. Using a telecompressor behind the baffle (at the back of the telescope, which is the only place where you can put it), it can give you less magnification and a brighter image, but *not* a larger vield of view, as this is limited by the baffle. If you use a telecompressor or an eyepiece with a very large field of view and focal length, there will be vignetting at the edge.

    So, you best option would be a 2" star diagonal combined with a long-focal eyepiece like the Hyperion 36; a telecompressoris only useful if you have a smaller camera sensor (like APS-C or smaller) or use 1.25" eyepieces (like in a binoviewer).

    Please also take a look at this info from Celestron.com:
    I want to use 2 in eyepieces with my SCT and/or Mak. Will there be vignetting from the OTA itself?
    https://www.celestron.com/blogs/knowledgebase/i-want-to-use-2-in-eyepieces-with-my-sct-and-or-mak-will-there-be-vignetting-from-the-ota-itself
    Answer by: Baader Web Team (Admin) on Mar 23, 2021 1:04:00 PM
  23. Rated: 0
    3/22/2021 5:33 PM FeatherTouch Micro Focuser for Celestron HD9.25" / CPC925 / C9.25
    Hello, Is this FeatherTouch Micro Focuser compatible for Celestron Nextar Evolution OTA 9.25?

    Answer rated: 0
    There are two versions of the Feather Touch - one for the old flat back plate and one for the new rounded back plate. The Evolution OTA has the
    new rounded back plate like the CPC. Just choose it in the option field at the web site.
    Answer by: Baader Web Team (Admin) on Mar 23, 2021 9:18:00 AM
  24. Rated: -1
    3/22/2021 12:11 AM Baader f/2 Highspeed-Filters (H-alpha, O-III, S-II)
    I was wondering if is possible to use these filters combined with the Samyang 135mm at F2.
    Thank you

    Answer rated: 1
    If you have the possibility to insert the filter in between the lens and the camera it will work. If you want to mount a filter in front of the lens, then the f/2 filters are not the right choice, this would be possible with the normal Narrowband filters
    Answer by: Baader Web Team (Admin) on Mar 22, 2021 9:45:00 AM
  25. Rated: -1
    3/21/2021 7:37 PM SolarSpectrum 0.7x Telecompressor 2"
    What are the threads on either side? Might it work with a Daystar quantum HA filter?

    Answer rated: -3
    Both sides have 2" threads - concerning Daystar filter compatibility - we really don't know.
    Answer by: Baader Web Team (Admin) on Mar 22, 2021 9:48:00 AM
  26. Rated: -2
    3/20/2021 8:46 PM Baader 2" BBHS ® Prism Star Diagonal Prism with 2" ClickLock Clamp
    How can best I attach the Baader 2" Prism Star Diagonal (#2456117) to my C8 Edge HD? The native back focus of the C8 is 133m, and the diagonal has already 100mm which doesn't leave a lot for barlow or reducer attachments? Thank you

    Answer rated: 1
    The back focus length must be hold precisely to set the camera sensor in the correct distance of 133,35mm (105mm behind the specific
    Celestron 0,7x reducer) for the best image quality. However for visual purposes you can use the diagonal without any problems when its
    mounted as it should. To put the diagonal onto the OTA we recommend the ClickLock clamp #2956220
    Answer by: Baader Web Team (Admin) on Mar 22, 2021 12:52:00 PM
  27. Rated: -1
    3/20/2021 7:54 AM Baader UFC (Universal Filter Changer)
    Will this work in a Skywatcher ED80 ?
    I need to put it between the flattener and the scope.
    the telescope has M56 male threads in the focuser tube.
    The flattener is M48 male in the camera side and M56 female at telescope side. Thanks in advance!

    Answer rated: 2
    It would be no problem with the M48-thread.

    Unfortunately, we do not have M56-adapters yet. You'd need someone who can make an adapter from M56 to one of our threads.
    Answer by: Baader Web Team (Admin) on Mar 23, 2021 12:57:00 PM
  28. Rated: -1
    3/19/2021 4:23 PM Baader Telescope Flap System (TFS) for PlaneWave CDK's
    I am interested in your telescope flap system for a CDK 20. The product photos on your website show a white shroud inside of the truss tubes. Does the TFS include the shroud or is that purchased separately?

    Answer rated: 0
    The TFS doe NOT include the shroud. Currently we cannot offer the TFS at all due to COVID related production issues, we are very sorry.
    Answer by: Baader Web Team (Admin) on Mar 22, 2021 9:35:00 AM
  29. Rated: 0
    3/19/2021 1:04 PM SolarSpectrum 0.7x Telecompressor 2"
    Can the 0.7x and 0.4x solar telecompressors be used for calcium k line imaging?

    Answer rated: -1
    The 0,7x will be suitable for CaK for sure. We have not yet tried with the 0,4x but it should be possible. Please note that these reducers need to be attached on the rear end of the filter. That means they do not show a larger area of the sun than without reducer (the Halpha or CaK filter aperture/diameter is the limiting factor) but make the given image smaller so that it fits on a small CCD or CMOS sensor. Therefore we can only recommend these reducers for photorgraphy.
    Answer by: Baader Web Team (Admin) on Mar 19, 2021 2:41:00 PM
  30. Rated: 0
    3/19/2021 12:56 PM Baader T-Ring Pentax K to T-2
    The flange focal distance for Pentax DSLR is 45,46 mm, but the specs of the ring is a height of 9,5 mm. If it is actually 9,54 mm in order to get the required distance of 55,00 mm, could you please be more specific in the product description, so that buyers don't worry about this point ?

    Answer rated: -2
    The hight of the ring must be slightly shorter. In case of temperature drift or mechanical tolerances you need some focus travel left to be able
    to compensate. Therefore most photo lenses are "over shooting" the hard stop for infinity.
    Answer by: Baader Web Team (Admin) on Mar 19, 2021 4:34:00 PM
  31. Rated: -4
    3/17/2021 5:27 PM Baader U-Venus-Filter (350nm)
    Is it possible to have this filter in a custom size such as 8x5 cm?

    Answer rated: -3
    We are very sorry, we cannot manufacture custom sizes with our mass production processes. Maybe if you buy thousands, but not for one item and not for a few...
    Answer by: Baader Web Team (Admin) on Mar 18, 2021 8:33:00 AM
  32. Rated: 1
    3/17/2021 4:39 PM Baader Standard Base - for MQR III&IV, for Witty One & for V-Bracket
    What type of screws do I need to fix the base to the Diamond Steeltrack focuser for refractor OTA ?

    Answer rated: 2
    The thread size is a metric M5. You can find more info about it in the manual:
    https://www.baader-planetarium.com/en/downloads/dl/file/id/175/product/2858/instruction_manual_for_all_baader_diamond_steeltrack_bds.pdf
    Answer by: Baader Web Team (Admin) on Mar 18, 2021 8:46:00 AM
  33. Rated: 0
    3/17/2021 3:15 PM Baader Hyperion Zoom M43 / SP54 Adapter
    I need the minimum pieces to connect my canon 80D to my Hyperion 8 to 24 mm universal zoom Mark IV. What do I need to order? Thanks

    Answer rated: 0
    Please check out our digiscoping brochure, especially page four should list all required adapters and answer your quiestions:
    https://www.baader-planetarium.com/en/downloads/dl/file/id/444/product/0/digiscoping_camera_adaptations_for_afocal_photography_and_eyepiece_projection.pdf
    Answer by: Baader Web Team (Admin) on Mar 17, 2021 3:20:00 PM
  34. Rated: 1
    3/17/2021 12:56 AM Baader L-RGB CCD-Filterset
    What are the dimensions of the mounted 2'' filters? The thickness and diameter of the mount and the length of the thread.

    Answer rated: -1
    Largest diameter : 50.3 mm, Height of largest diameter 5.95 mm, Thread M48, Height of thread 2.9 mm
    Answer by: Baader Web Team (Admin) on Mar 19, 2021 11:45:00 AM
  35. Rated: -1
    3/16/2021 10:09 AM Alan Gee Telecompressor Mark II (T-2 part #20)
    I recently acquired the Alan Gee Telecompressor to replace the stock Celestron x0.63 reducer. I'm using it only for photographic purposes on my C9.25, with an ASI294. It's a really well-built piece of kit.
    I religiously followed the instructions from the manual, page 12: I bought the #2454410 centering ring, the short BTA #2408160, kept the two supplied 19mm spacers with the Telecompressor, and used 45.5mm T2 spacers to achieve a 121mm working distance. Surprisingly, that yielded an effective focal ratio of f/D = 5.2, which was way too low (stars in the corner were distorted). I then removed the 45.5mm T2 spacers completely, and got around f/5.6 (still a bit of star distortion but quite less so).
    Do you see why the Telecompressor yields so much unexpected reduction? Is the 121mm distance really computed from the Sharpley lens that is on the camera-side, or the one farther in the baffle of the telescope?

    Answer rated: 4
    Aorry - distance is calculated for the geometric middle between the two lenses. And we must admit - this product was designed 30 years ago - when people used emulsion film and wondered how to evacuate film layers prior to every exposure...
    With modern CMOS-cameras we see the end of this product coming - since the original SC-optical design does not support airy disc sizes smaller than ~ 8 micron. So no SC-compressoer has a chance to live up to the tiny pixel sizes.
    For this reason Celestron had redesigned the SC to incorporate a matched corrector, situated within the optical train at a position we cannot attain with the Alan Gee. So whatever distance you choose - modern imaging devices will mercilessly exhibit the limitations of the system as a whole.
    Answer by: Baader Web Team (Admin) on Mar 19, 2021 11:47:00 AM
  36. Rated: 1
    3/14/2021 11:12 PM Baader FlipMirror II Star Diagonal
    Vorrei chiedervi gentilmente, con quale precisione superficiale, è stato lavorato lo specchio, RMS ed errore di picco/valle, in quanto nelle specifiche, non è indicato.
    Grazie

    Answer rated: 2
    Please excuse, but for the purpose of this mirror, this indication of optical flattness is irrelevant.

    The mirror quality allows for flawless sharpness up to 300x magnification and it is good for any kind of guiding method.

    Please keep in mind that the sales price is below € 200.-

    In case you could trust us that we have given this product the same care as with our other Baader-products, we are quite convinced that you could be satisfied. Especially when we had been checking other flip-mirror qualities, to find that theirs is unpolished coated float glass.
    Answer by: Baader Web Team (Admin) on Mar 15, 2021 11:44:00 AM
  37. Rated: 0
    3/13/2021 12:38 AM Baader 2" ClickLock Diagonal Mirror
    I have ordered Baader's hyperion mark 4 w/ 2.25x barlow, AND the Baader's 2" click lock diagonal. With the 2" thread on the zoom, and barlow installed, is this setup compatible with the 2" click lock diagonal? Thank you!

    Answer rated: 0
    It works only in the way you see here (even if the photo is a Mark III Zoom) https://assets.baader-planetarium.com/media/extendware/ewimageopt/media/inline/3d/4/hyperion-zoom-barlowlinse-225-fach-b0d.jpg
    You need to remove the 1,25" barrel from the Hyperion Zoom and screw the barlow directly on
    Answer by: Baader Web Team (Admin) on Mar 19, 2021 12:28:00 PM
  38. Rated: -1
    3/12/2021 10:13 AM Baader UFC (Universal Filter Changer)
    I want to use the UFC with the 2” star diagonal with a Celestron 9.25 SC. The diagonal manual states that I need part #2459117 (M54) between the ufc and the diagonal. Is this correct? Don’t I need the #2459120 part (2” connection)?

    Answer rated: -1
    You are correct that in this case the item number #2459117 was a mistake and should be replaced by #2459120.
    However, meanwhile there is an even better solution available which wasn't at the time the diagonal manual was written. We will update this soon.
    We now sell the UFC S58 dovetail adapter #2459125 which allows you to rotate and fasten the Baader 2" diagonal or prism in any position. Check out the product page and especially the application images: https://www.baader-planetarium.com/en/filters/universal-filter-changer/baader-ufc-s58-camera-adapter.html
    Answer by: Baader Web Team (Admin) on Mar 12, 2021 10:36:00 AM
  39. Rated: 0
    3/10/2021 9:30 AM Bundle: Hyperion Universal Zoom Mark IV with Hyperion-Barlow 2.25x (8-24mm / 3.6-10.7mm)
    Hello,
    I would like to know if it is possible to use the 2” astro-nosepiece with SC male thread (n°3 on p.20 of instruction manual) to fix my Canon EOS on the telescope directly with a supplemental EOS ring ?
    Thank you for your reply

    Answer rated: -1
    Yes, but... Of course, you could make a dedicated reducer from S52-ring dovetail to SC-thread (that is, if you use one of our Wide-T-rings), but it would be cheaper to simlpy buy a 2" / S52 Nosepiece # 2958551.
    If you have a standard T-ring (with M42x0.75-thread), then the thread is smaller than the nosepiece. You could use Baader Reducing-Ring 2"i / T-2a, with 1.5mm optical length # 2958244 to attach the nosepiece to the T-ring, but this wouls be 1,5mm longer than a dedicated nosepiece Baader 2" nosepiece to T-2 / M48 (T-2 part #16) # 2408150 and not much cheaper, too.
    dependng on the size of your camer sensor, it would be better to buy a Wide T-ring and a matching nosepiece to avoid vignetting, which will occur on a full-frame-camera when you are limited to T-2.
    Answer by: Baader Web Team (Admin) on Mar 11, 2021 12:55:00 PM
  40. Rated: 0
    3/10/2021 7:20 AM Baader 2" Amici-erecting-prism 90° with 2" holder and 2" sleeve
    The top of the nosepiece is has an M48-thread for 2" accessories. Inside the nosepiece, its inner diameter narrows; there is a visible inner ridge in the photos. Is this second diameter a standard size (T2 etc) and is it threaded?

    Answer rated: -1
    Inside the nose piece behind the M48 filter thread the diameter is 43mm. It is matt black painted and is made with grooves to minimize
    reflections, it is not a T2 M42 thread.
    Answer by: Baader Web Team (Admin) on Mar 10, 2021 10:41:00 AM
  41. Rated: 0
    3/10/2021 3:37 AM Baader UFC S70 RASA 8" Telescope-Adapter (optical height: 1.4 mm)
    Will this work with ASI2600MC-Pro?
    Another question. Is there a filter drawer that can be used on ASI2600MC-Pro?

    Answer rated: 0
    This UFC S70 adapter can only take the UFC base and for example the UFC T-2 (w) camera-adapter for ASI cameras with T-2 (m) thread.
    This combination allows it to get cameras like the ASI1600 into focus when you remove the 11mm ring to reduce the back focus to 6,5mm.
    Unfortunately the back focus length of the ASI2600 is fixed by 17,5mm which is too long, even for our new FCCT low profile filter changer that
    we want to release soon.
    Answer by: Baader Web Team (Admin) on Mar 10, 2021 10:45:00 AM
  42. Rated: 0
    3/8/2021 9:36 PM Baader VariLock 46, lockable T-2 ExtensionTube 29-46mm with spanner tool (T-2 part #25V)
    Can the Varilock 46 extension tube be used with the Baader VIP barlow to make a zoom barlow?

    Answer rated: 2
    According your question please refer our manual about the VIP barlow lense:
    https://www.baader-planetarium.com/en/downloads/dl/file/id/240/product/1062/calculating_different_magnifications_with_the_vip_barlow.pdf
    The range of magnification will be only a few, also the fine pitch leads to a lot of revolution that a change will be seen remarkable. The Vari Lock
    is rather made to set it up one time for a certain length.
    Answer by: Baader Web Team (Admin) on Mar 10, 2021 12:42:00 PM
  43. Rated: 0
    3/8/2021 10:12 AM Reducing piece 3" to M68a (for FLI CFW and SBIG STX CDD cameras)
    Good morning

    I have some of these on order at present through one of your suppliers. I wonder if you have any idea of when your stock will be arriving please ?

    Cheers

    Steve

    Answer rated: 0
    Unfortunately COVID has also caused problems for us. The production of many articles had to be stopped temporarily because supply chains are interrupted again and again at various points. This also affects suppliers of some mechanical parts. We ask for your understanding for this situation and that we are not able to give firm delivery dates at the moment. We would like to assure you that we are working everywhere to solve the supply problems for the components of our products and to bring our delivery capacity back to a normal level.
    Answer by: Baader Web Team (Admin) on Mar 8, 2021 10:57:00 AM
  44. Rated: 1
    3/8/2021 3:24 AM Baader Tripod Adapter Flange for NexStar SE / EVO
    What are the options (hole and spacing) for attaching to a T-POD 110/130?

    Answer rated: 3
    Please see our technical drawing of the T-Pod head:
    https://assets.baader-planetarium.com/media/extendware/ewimageopt/media/inline/ea/7/baader-t-pod-aluminium-tripod-95-130cm-e95.jpg
    The flange gets mounted with three screws on the 6xM5 60° LK D77
    Answer by: Baader Web Team (Admin) on Mar 10, 2021 12:58:00 PM
  45. Rated: -1
    3/4/2021 8:22 PM 2" BDS-SC Baader Diamond Steeltrack® Focuser
    Please can you indicate which Diamond Steeltrack focuser will fit to an Orion-Optics ODK10 reflector telescope.


    Answer rated: -3
    Normally we would recommend the SC version. But we cannot find an information with thread is on the rear end of the telescope. Please inquire from Orion or an Orion dealer. Her you find the technical drawing of our SteelTrack Focusser that shows all possible adaptors https://www.baader-planetarium.com/de/downloads/dl/file/id/29/product/2856/bds_sc_dimensions_technical_drawing.pdf
    Answer by: Baader Web Team (Admin) on Mar 5, 2021 9:19:00 AM
  46. Rated: 1
    2/26/2021 7:37 PM Baader Single Polarizing Filter
    I use 1 1/4 eyepieces on a SOlar wedge. For nighttime observing, I use a T2 Zeiss prism diagonal with a 2" nosepiece (which sits in a 2" focuser). I already have a 1 1/4 " polarising filter which fits onto my eyepieces. Can I combine this with a 2" polarising filter, to be put before the prism, and use the combination as a variable polariser for lunar observation (i.e. one polarising filter before the prism and a second one after the prism, and conveniently rotating the eyepiece to get the desired dimming)? This would be very practical, if it works, but will this setup be less good than a dedicated 1 1/4 inch variable polariser?

    Answer rated: 7
    Yes, sure, this works!
    Answer by: Baader Web Team (Admin) on Mar 1, 2021 11:55:00 AM
  47. Rated: 0
    2/26/2021 12:32 PM Baader Solar Continuum Filter (540nm)
    Does the Solar Continuum filter block or transmit Infra red or UV?

    Answer rated: -1
    This filter blocks everything from 300 nm up to 1200 nm - except for a "clean" solar continuum-area at 540 nm
    Answer by: Baader Web Team (Admin) on Feb 26, 2021 3:12:00 PM
  48. Rated: 0
    2/26/2021 10:43 AM BCF 2 - DSLR Astro Conversion Filter for Canon Full-Format Cameras (all latest Models)
    Is it possible to purchase bcf filter suitable for SONY 3N?

    Answer rated: 0
    We are very sorry, we do only offer the filters for the Canon cameras that you find on our website https://www.baader-planetarium.com/en/filters/dslr-astro-conversion.html There are no plans to produce such filters for other cameras.
    Answer by: Baader Web Team (Admin) on Feb 26, 2021 10:47:00 AM
  49. Rated: 0
    2/26/2021 1:54 AM Baader Sky Surfer V (Night & Day Design) Red-Dot-Finder
    I would like to attach the Sky Surfer V to an Orion 180mm Mak-Cass. The spacing between the available finder scope screws is 0.75 inches (approximately 19mm). This spacing appears to be too narrow for the Baader Standard Base that comes with the Sky Surfer V. Is it acceptable to use the center hole plus one of the slots to attach the base to the Mak-Cass or to maybe use only the center hole? If neither approach is acceptable do you have a dovetail mounting base that will work with a 19mm attachment screw spacing?

    Answer rated: 0
    It is no problem to attach the base to a round tube only with the central screw - the form of the base makes it impossible that it rotates on the telescope, and one screw is sufficient to hold the weight.
    Only on a flat surface or if you can't tighten the screws, you will need two screws.
    Answer by: Baader Web Team (Admin) on Feb 26, 2021 10:27:00 AM
  50. Rated: 8
    2/25/2021 12:57 PM Baader 2" ClickLock Diagonal Mirror
    Hey! I wonder whether it'll work well with Skywatcher 72ED?

    Answer rated: 1
    It seems that this telescope has a little problem with eye pieces of short focus lenghtes that the focuser cannot travell deep enough (in-focus).
    Obviously SkyWatcher is aware of this problem, the tube of the newer models are 10mm shorter.

    Okay, about our star diagonal you can find here more information according the lengthes:
    https://www.baader-planetarium.com/en/blog/optical-tube-lengths-of-2-clicklock-and-bbhs-mirror-diagonals/
    Maybe you can turn in the focuser fully and picture the moon on a white sheet of paper (without eye piece/ star diagonal) so you´re able to
    measure the distance with a ruler to find out the back focus length.
    Answer by: Baader Web Team (Admin) on Feb 26, 2021 9:59:00 AM
  51. Rated: 0
    2/25/2021 11:50 AM Steeldrive II motor focuser with Controller
    After installing the motor, is it still possible to use the focus knobs manually, or will this cause damage to the motor?

    Answer rated: 1
    You can use the focus knob manually without a problem. Please hold in mind that you change the position that you have to do a new zeroing
    afterwards.
    Answer by: Baader Web Team (Admin) on Mar 10, 2021 3:38:00 PM
  52. Rated: -3
    2/24/2021 7:01 PM Baader 2"/90° Astro Amici-Prism with BBHS ® coating
    Baader 2"/90° Astro Amici-Prism with BBHS ® coating + Baader 2" NexStar locking ring is compatibe with OTA Nextar Evolution 9.25?

    Answer rated: 2
    Yes this will work. Just unscrew the visual-back and turn down fully the locking ring. Then unscrew the 2" nose piece off and turn down the
    amici prism fully. Now just turn back to your appropriete position, maybe up-rigt, then turn back the locking ring to fix this position.
    Answer by: Baader Web Team (Admin) on Feb 25, 2021 11:48:00 AM
  53. Rated: 1
    2/23/2021 6:57 PM Baader T-2 Quick Changer with Zeiss Micro Bayonet (T-2 part #06)
    can you tell me the outer diameter of a zeiss micro bayonet male fitting? i have a japanese zeiss copy from the 1950s and i want to see if this adapter will work with it (e.g, i need to know whether the japanese microscope bayonet is a zeiss fit).

    Answer rated: -1
    Unfortunately, this will not work. The Carl Zeiss Jena Astro-ring-dovetail has got a different dimension than any of the micro-dovetails of either Zeiss- East or Zeiss-West microscopes.
    Answer by: Baader Web Team (Admin) on Feb 24, 2021 4:25:00 PM
  54. Rated: -6
    2/22/2021 7:43 PM Baader 2" ClickLock eyepiece clamps (from T-2 to 4,1")
    I have a Celestron Nexstar 8SE and want to switch to clicklock system instead. Which model fits the end of the telescope? Is there a clicklock model that fits the Celestron star diagonal that came with the telescope with model no. 94115-A? Or do I need to switch to a new star diagonal? If so, which one? I use 1.25 "eyepieces.

    Answer rated: 0
    There are several ways to put a Clicklock clamp onto your telescope. You can unscrew the visual back and put on:
    https://www.baader-planetarium.com/en/baader-2%22-nexstar-locking-ring..html Then remove the 2" nose pice from:
    https://www.baader-planetarium.com/en/accessories/optical-accessories/prism-and-mirror-star-diagonals/baader-2%22-clicklock-diagonal-mirror.html
    Now you´re able to thread the diagonal on the telescope fully and turn it back maybe to the up-right position and lock it. This is the most compact
    way to have a fine diagonal and a ClickLock clamp is including. For the 1,25" eye pieces you´ll need a reducer like:
    https://www.baader-planetarium.com/en/2%22--1%C2%BC%22-reducer-with-2%22-filter-holder.html
    https://www.baader-planetarium.com/en/baader-2%22-to-1%C2%BC%22-clicklock-reducer-(t-2-part-15b).html
    Answer by: Baader Web Team (Admin) on Feb 23, 2021 8:30:00 AM
  55. Rated: 2
    2/20/2021 5:09 AM Baader Neutral Density Filter (ND 0,6 / 0,9 / 1,8 / 3,0)
    What size Filters (Neutral Density, etc) do I buy for my Morpheus and Hyperion Eyepieces? Sorry about asking such a lame question but I chose Morpheus specifically because they (as well as an Hyperion I've ordered) were listed in the 2" Eyepiece category from OPT (I have an Omni XLT 150 w/2" eyepiece). But I need to put my 6.5mm Morpheus into a 2-1.25" adapter, and it's the 1.25" end that attaches to the Filter, correct? So for my 2" Morpheus (and Hyperions) I actually use 1.25" Filters, yeah? Help!

    Answer rated: -2
    1,25" filters fit directly onto the eyepieces; only the Hyperion Aspheric 31mm and 36mm require 2" filters.
    Most adapters from 2" to 1.25" also have a 2" filter thread, so that you can put a 2" filter into that adapter and use all 1.25" eyepieces with 2" filters.
    The focal lengths and true field of view of the (not Aspheric) Hyperions and Morpheus eyepieces are short enough that 1.25" filters are sufficient.
    Answer by: Baader Web Team (Admin) on Feb 22, 2021 2:53:00 PM
  56. Rated: 0
    2/19/2021 9:23 PM Baader 36mm Hyperion Aspheric 2" Eyepiece
    In order to use this eyepiece for eyepiece projection with the Nikon Z6, what parts do I need beside the Nikon Z wide T-ring? Will there be any vignetting?

    Answer rated: -1
    According your question you´ll find under Downloads our PDF document about digiscoping which shows you all the possibilities to adapt:
    https://www.baader-planetarium.com/en/downloads/dl/file/id/444/product/1217/digiscoping_camera_adaptations_for_afocal_photography_and_eyepiece_projection.pdf
    If the distance eye piece <-> camera is too short you´ll see dark corners in the image. This is not a vignetting but the exit pupil of the eye piece is
    just too close to the camera sensor.
    Answer by: Baader Web Team (Admin) on Feb 22, 2021 10:58:00 AM
  57. Rated: 0
    2/15/2021 2:12 PM Bundle: Hyperion Universal Zoom Mark IV with Hyperion-Barlow 2.25x (8-24mm / 3.6-10.7mm)
    Will I be able to use Hyperion-Barlow 2,25 with the eyepieces from other manufactures and Hyperion Universal Zoom Mark IV with other barrows?

    Answer rated: 0
    With the included adapter A, you can use it with every eyepiece which has got a 1.25" filter thread. Please note that the length of the 1.25" nose pieces is not standardised, so that the actual magnification factor may vary slightly.

    You can use every barlow lens with the Hyperion Zoom, no problem.
    Answer by: Baader Web Team (Admin) on Feb 16, 2021 9:20:00 AM
  58. Rated: -1
    2/14/2021 3:45 AM Baader DSLR-2" Filter Holder M48/SP54
    I have a 58mm DSLR lens so I purchased # 2408166 - Baader DSLR-2" Filter Holder M48/SP54 and
    # 2958058 - Baader Hyperion DT-Ring SP54/M58. They fit together perfectly as shown in the simulation video. However my 2” Optolong L-eXtreme filter will not pass through the front to engage the threads. I can install the filter from the inner side of 2408166 but then the filter may be facing the wrong direction. Please advise. Thank you.

    Answer rated: -2
    There are (at least) two options, if the filter orientation must be maintained (this depends on the filter and can't be answered in general).
    You could use an empty filter cell as extension, e.g. Filter cell 2" Low Profile, 6mm height # 2459252L or Filter cell 2" classic (8mm height) # 2459252.
    Or you could look for a tool to open camera lenses. With this, you should be able to open the filter cell and to turn the filter around.
    Answer by: Baader Web Team (Admin) on Feb 15, 2021 11:54:00 AM
  59. Rated: -2
    2/11/2021 4:07 AM 2" BDS-RT Baader Diamond Steeltrack Focuser
    I am interested in the 2" BDS-RT Baader Diamond Steeltrack Focuser and what I need to fit with sw 80 Ed pro black diamond. This telescope have a 3 screw no thread .

    Answer rated: 1
    We would love to see our Diamond Steeltrack on as many telescopes as possible. However we cant answer this question for certain, since we don't sell this telescope and thus don't know the thread sizes, backfocus and so on. We would need precise measurements of the thread sizes / pitch as well as measurements or specs from your telescope to evaluate the backfocus. If you have these data, you can also see if one of the available adapters fits, otherwise, a custom-made adapter ring would have to be made.

    In addition to the adaptations mentioned in the manual at https://www.baader-planetarium.com/en/downloads/dl/file/id/175/product/2858/instruction_manual_for_all_baader_diamond_steeltrack_bds.pdf, we do have the following adapters:
    RT-Adapter Ø 97mm Diamond Steeltrack® (Synta / Celestron) # 2957282
    RT-Adapter M90x1 Diamond Steeltrack® (Skywatcher) # 2957283
    RT-Adapter 4.2" Explore Scientific Diamond Steeltrack® # 2957285
    RT-Adapter M90x1.5 Diamond Steeltrack® (Skywatcher) # 2957284
    RT-Adapter M93 x 1 Diamond Steeltrack® # 2957281
    We'd have to ask you to check
    Answer by: Baader Web Team (Admin) on Feb 11, 2021 12:10:00 PM
  60. Rated: 1
    2/9/2021 5:19 PM Baader Wide-T-Ring Canon R (for Canon R bajonet) with D52i to T-2 and S52
    I have Canon EOS R5 full frame mirrorless camera (RF-mount’s flange focal distance is 20mm) and I am going to buy Celestron Nexstar 8SE Telescope.
    My goal is to get good photographs from planets, moon and maybe deep sky objects too. I know, that I need high quality optical elements between the telescope and the camera to achieve the goal.
    I am going to buy Baader 2" BBHS ® Prism Star Diagonal Prism with 2" ClickLock Clamp, Baader Hyperion Universal Zoom Mark IV, 8-24 mm eyepiece (1¼" / 2"), 9 mm and 17.5 mm Morpheus® 76° widefield eyepiece. VIP 2x modular barlow lens is also in my list.
    What kind of adapters, extensiontubes and other finetuning products do I need to attach my camera to eyepieces? I think I need a new Baader Wide-T-Ring Canon R but what else to get good astrophotographs?

    Answer rated: 1
    With a modern camera with small pixels and a Schmidt-Cassegrain at f/10, a barlow lens like the 2x VIP is usually sufficient, especially if you boost it with some T-2-extensions 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

    This way, you can match the f/ratio to the resolution of your camera.

    We have described the adaptation of a camera to an eyepiece in this PDF: https://www.baader-planetarium.com/en/downloads/dl/file/id/444/product/1210/digiscoping_camera_adaptations_for_afocal_photography_and_eyepiece_projection.pdf
    This will result in much higher magnifications than a barlow lens, so with a f/10-telescope, the barlow lens is usually the better choice (with modern cameras). On page 5 of this PDF, you can find a formula to calculate the best magnification depending on the pixel size of your camera.

    For photographing the planets, we recommend a dedicated video module like the QHY planetary cameras https://www.baader-planetarium.com/en/cameras/qhyccd-kameras/planetary-and-guiding-cameras.html or the Celestron NexImage. The large sensor of a DSLR is not helpful when taking images of the planets.

    It is fine for taking images of the complete moon or the (with an appropriate solar filter in front of the telescope) the sun. To attach your camera directly, you can use Baader SC / HD Ultra Short T-Adaptor, 7mm optical length # 2958500B (which limits you to the smaller diameter of the T-2-system) or you upgrade your telescope with a 2" eyepiece clamp like Baader 2" ClickLock SC/HD (2") clamp (C5" - C9¼") #2956220 and couple the wide T-ring with 2" / S52 Nosepiece # 2958551.

    For Deep-Sky-photography, you should use an equatorial mount like an AVX - you could also purchase the wedge for the NexStar SE, but the AVX is a much better solution if you want to take photos. It is much sturdier and not that much more expensive than a SE plus wedge.
    Answer by: Baader Web Team (Admin) on Feb 10, 2021 2:12:00 PM
  61. Rated: 1
    2/9/2021 2:55 AM Baader Neodymium (Moon & Skyglow) Filter
    What is the minimum focal ratio that will still allow this filter to work properly?
    I'm thinking here about very short focal ratio systems, such as the Hyperstar, which can operate at f/2.

    Answer rated: 1
    The filter works with f/2 systems
    Answer by: Baader Web Team (Admin) on Feb 9, 2021 8:17:00 AM
  62. Rated: 0
    2/8/2021 8:07 PM Baader Ultra Narrowband O-III CCD-Filter (4,5nm)
    I am considering buying a 2 inch 4.5nm OIII filter for use with my modified Canon 70d and Redcat 51. I’ve read that the Baader filters can create halos around stars, possibly caused by the optical train configuration. Are the halos that are reported manageable in post processing? Have you had any feedback from customers with similar set ups to myself and if so, what was the general opinion? The sole reason for buying it would be to create HaOiiiRGB composite images with the current set up that I have. Any feedback regarding this filter would be welcome.

    Answer rated: 0
    Here you find our very detailed statement about halos: https://www.baader-planetarium.com/en/blog/halos-viewed-without-prejudice/
    Answer by: Baader Web Team (Admin) on Feb 9, 2021 8:18:00 AM
  63. Rated: -2
    2/7/2021 8:40 PM Baader 2" BBHS ® Mirror Diagonal with 2" ClickLock Clamp
    How do you recommend cleaning the BHSS mirror diagonal? Do you have a recommended product and procedure?

    Answer rated: 0
    BBHS-mirror coatings require the same care during cleaning as you would give to the protected aluminum-coatings of a Newtonian telescope.
    For cleaning optics, we recommend our Optical Wonder fluid plus a soft brush to remove dust:
    https://www.baader-planetarium.com/en/catalogsearch/result/?q=optical+wonder
    For cleaning optics, please take a look at this PDF: https://www.baader-planetarium.com/en/downloads/dl/file/id/110/product/1663/cleaning_and_maintenance_of_optics_a_short_instruction_guide.pdf
    Answer by: Baader Web Team (Admin) on Feb 8, 2021 10:02:00 AM
  64. Rated: 2
    2/6/2021 10:22 PM Filter cell 2" classic (8mm height)
    To be clear, what is the total height (8mm??) of the filter, vs the height without the male threads?

    Answer rated: 0
    The visible rim of the flter cell (when it is mounted into an eyepiece) is 8mm, the thread is an additional 2mm, so total height of the filter cell when placed on a table is 10mm.
    Answer by: Baader Web Team (Admin) on Feb 8, 2021 10:33:00 AM
  65. Rated: -1
    2/3/2021 12:56 PM The Original: Baader Planetarium
    Firmly interested in the Planetarium; please keep me in a waiting list.
    Please let me know expectations on a shipping date.

    Answer rated: -3
    The Baader Planetarium gets handcrafted here in our factory in very small qty. Therefore the delivery time is several month, we cannot say more exactly. Please send us your complete adress then we can add you to the reservation list.
    Answer by: Baader Web Team (Admin) on Feb 4, 2021 11:04:00 AM
  66. Rated: 0
    2/2/2021 7:54 PM SolarSpectrum Research Grade 0.4x Telecompressor 2"
    What is the corrected field diameter when used with 4x telecentric?
    Does the corrected field diameter shrink if the reducer is mounted at say 30 mm from the etalon output? If yes, how much, approximately?

    Answer rated: 0
    As the chip moves away from the reducer, the usable area gets smaller dramatically much faster. Unfortunately, we don't have tables for this.
    Changing the distance between the TZ and the reducer should have relatively little effect. The design is calculated for about 50mm distance. +-10mm should have no effect.
    Answer by: Baader Web Team (Admin) on Feb 10, 2021 10:43:00 AM
  67. Rated: 0
    2/1/2021 11:35 PM Optical Wonder™ Set (Cleaning Fluid and Cloth)
    Can I use it to clean a Neutral Density Filter OD3 (Baader Cool Ceramic Herschel Solar Prism) ?

    Answer rated: -1
    Yes, this works
    Answer by: Baader Web Team (Admin) on Feb 2, 2021 8:53:00 AM
  68. Rated: -2
    2/1/2021 10:25 PM Baader 2" ClickLock eyepiece clamps (from T-2 to 4,1")
    Does this click lock adapter for SCT visual back use include a 2” ID cap for the opening, or do I need to order one separately? I’ll keep the adapter on permanently, and will need a cap for OTA storage.

    Answer rated: -1
    A dust cap is included.
    Answer by: Baader Web Team (Admin) on Feb 3, 2021 10:25:00 AM
  69. Rated: -1
    2/1/2021 7:32 PM Off Axis Guider for RCC Coma Corrector (RCC-OAG)
    What size is the prism?

    Answer rated: 0
    The prism size is 8x8mm
    Answer by: Baader Web Team (Admin) on Feb 2, 2021 8:53:00 AM
  70. Rated: 0
    2/1/2021 4:14 PM OPFA - Eyepiece Projection adapter ( I - VII )
    Which precise adaptor do I need in order to connect the « Baader Eyepiece Projection adapter OPFA-2 / for 2" eyepiece clamps » to my SONY A6000 DSLR camera.
    I will then connect the eyepiece projection adapter to my 8inch SCT via the 2 inch BAADER click-lock adapter.

    Thank you

    Answer rated: 1
    The A6000 uses Sony E-Mount, so you need
    Baader Wide-T-Ring Sony E/NEX Bayonet with D52i/M48 to T-2 und S52 # 2408317
    which connects to the T-thread of the OPFA.
    Answer by: Baader Web Team (Admin) on Feb 1, 2021 4:31:00 PM
  71. Rated: 2
    1/29/2021 11:55 PM Baader FlipMirror II Star Diagonal
    I have a Skywatcher 150/750 PDS with a back-focus of 86mm. This Newtonian reflector is optimized gor astrophotography. Flip mirrors are generally not compatible with reflectors. However, in this case, given the optical path of the Baader flip mirror, would it be possible to use it on my scope? If so, how? Thank you.

    Answer rated: 2
    This might just work, but it depends on the backfocus of your camera and eyepieces. Also, there is probably no way to adapt a coma corrector.

    The sortest adaptation to the telescope would probably be 2" / S52 Nosepiece # 2958551

    The field stop of the eyepiece mus be as far away from the flipmirror as the camera sensor, so it also depend on whether you use a planetary camera, a DSLR or a mirrorless camera. We recommend Baader Focusing Eyepiece Holder 1¼" / T-2 (T-2 part #08A) # 2458125 with a length of 29-35mm, so it should be no problem wit a video module for images of the planets - especially with an eyepiece like the Baader Classic Orthos, where the field stop is inside of the nosepiece. Or you use a low-profile eyepiece clamp like Ultrashort 1¼" / T-2 Clamp # 2458121, which might be the better choice.

    For photography with a larger sensor, you'll probably want to use a coma corrector instead of the flip mirror.
    Answer by: Baader Web Team (Admin) on Feb 1, 2021 1:17:00 PM
  72. Rated: 0
    1/29/2021 9:52 PM 2" MPCC Mark III (Multi-Purpose Coma Corrector for Newtons)
    I have a Hyperion Zoom mark IV eyepiece which I use with a 16" f/4,5 Newtonian reflector.
    Will it work properly if the coma corrector base element/main body is screwed directly into the 2" barrel of the Hyperion Zoom eyepiece?
    Sincerely, Joachim

    Answer rated: 0
    No, this will not work - the distance from the nosepiece to the refence plane is 31,5mm, the MPCC requires 55+/1mm.
    You need the MPCC in T-2-configuration plus
    Baader Expanding Ring T-2f / M48m (T-2 part #29) # 2458110 - optical length 2.5mm, placed inside of the 2" nosepiece of the Hyperion Zoom
    Baader VariLock 29, lockable T-2 ExtensionTube 20-29mm with spanner tool (T-2 part #25Y) # 2956929, set to 21mm.
    similar to the setup described for 2"-eyepieces on page 10 of the MPCC-manual at http://www.baader-planetarium.com/en/downloads/dl/file/id/483/product/3004/mpcc_mark_iii_instruction_manual.pdf
    Answer by: Baader Web Team (Admin) on Feb 1, 2021 1:49:00 PM
  73. Rated: 0
    1/28/2021 7:45 PM Baader Double Polarizing Filter
    Is the Baader Double Polarizing Filter 2" - 2408344 compatible with the UFC system? Is it sufficiently narrow to use with slider 2459112 and used in the UFC drawer?

    Answer rated: 0
    Unfortunately the Double Polarizing Filter 2" - 2408344 filter is not suitable for usage with the UFC 2" Filter slider. The Double Polarizing Filter is comprised of two filters enclosed in a separate filter cell each. This makes the total height too large for this filter to be put in the UFC 2" Filterslider.
    Answer by: Baader Web Team (Admin) on Jan 29, 2021 4:10:00 PM
  74. Rated: -6
    1/27/2021 3:35 AM Baader Hyperion Universal Zoom Mark IV, 8-24mm eyepiece (1¼" / 2")
    Having trouble to connect the zoom Baader Hyperion Universal Zoom Mark IV, 8-24mm eyepiece to a Stellarvue 45-Degree Correct Image Erecting Prism - 2" -D1035. Do I need a adaptor ?
    Thank you

    Answer rated: -2
    Our eypiece barrel is produced exactly on the right size. It happens very rarely that it doesn´t fit in another manufacturers eyepiece clamp, the misfit is the clamp, not the eyepiece. Adaptors other than the 2" and 1,25" barrels that are supplied with the eyepiece, are not available.
    Answer by: Baader Web Team (Admin) on Jan 27, 2021 8:40:00 AM
  75. Rated: -1
    1/26/2021 7:31 PM Baader 2" BBHS ® Mirror Diagonal with 2" ClickLock Clamp
    Do you have a dimensioned line drawing available for the 2" BBHS mirror diagonal? I'm designing a carrying case for lenses and accessories and want to include room for the future purchase of this diagonal. Thanks.
    Barry

    Answer rated: 1
    Unfortunately we have no drawing that fits for this purpose. We can only recommend to buy the mirror before cutting the foam
    Answer by: Baader Web Team (Admin) on Feb 1, 2021 11:28:00 AM
  76. Rated: -1
    1/26/2021 7:27 PM Baader 2" nosepiece to T-2 / M48 (T-2 part #16)
    I purchased Baader 1.25inch click lock # 2458100. I want this to connect to Celestron 6SE visual back #93653A. Kindly let me know the part number I need to purchase or provide me with the alternate solution with part numbers.

    Answer rated: -1
    You need an adapter from SC-thread to T-2. You can use e.g.
    Baader T Adapter (BTA) for SC and MAK Telescopes (T-2 part #21) # 2408160
    Answer by: Baader Web Team (Admin) on Jan 27, 2021 8:46:00 AM
  77. Rated: -1
    1/26/2021 2:01 PM RT-Adapter M93 x 1 Diamond Steeltrack®
    What is the length of the M93 male-threaded portion on this adapter?

    Answer rated: 0
    The length of the M93 thread is 6,5mm and the total length is 20,5mm. The dimensions of the BDS-RT are here:
    https://www.baader-planetarium.com/en/downloads/dl/file/id/28/product/2858/bds_rt_dimensions_technical_drawing.pdf
    Answer by: Baader Web Team (Admin) on Jan 27, 2021 7:57:00 AM
  78. 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: 1
    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
  79. Rated: 1
    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: -1
    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
  80. Rated: 2
    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: -1
    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
  81. Rated: 1
    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: 5
    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
  82. Rated: 0
    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: 1
    We are sorry there is no other version available
    Answer by: Baader Web Team (Admin) on Jan 18, 2021 10:58:00 AM
  83. Rated: -2
    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: -1
    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
  84. Rated: -5
    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: 3
    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
  85. Rated: 1
    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
  86. Rated: -3
    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: -2
    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
  87. Rated: 2
    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: 1
    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
  88. Rated: 1
    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: -1
    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
  89. 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: 3
    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
  90. Rated: 0
    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: 0
    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
  91. Rated: 0
    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
  92. Rated: 1
    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: -3
    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
  93. 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
  94. Rated: 7
    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: -2

    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
  95. Rated: 5
    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
  96. Rated: 1
    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: 1
    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
  97. 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: -6
    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
  98. 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: 4
    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
  99. 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: 4
    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
  100. Rated: -1
    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: -1
    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
  101. Rated: 3
    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: 2
    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
  102. Rated: 1
    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: -3
    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
  103. Rated: 2
    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
  104. Rated: 2
    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: -2
    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
  105. 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: -3
    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
  106. Rated: 2
    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: 3
    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
  107. Rated: 3
    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: -2
    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
  108. Rated: 10
    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: 1
    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
  109. 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
  110. 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: 0
    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
  111. Rated: 2
    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
  112. Rated: -1
    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: 2
    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
  113. Rated: 8
    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
  114. Rated: -1
    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
  115. 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: -1
    This may be early next year
    Answer by: Baader Web Team (Admin) on Dec 21, 2020 10:22:00 AM
  116. 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
  117. Rated: -2
    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: 1
    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
  118. Rated: 2
    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: -1
    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
  119. Rated: 4
    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: 4
    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
  120. Rated: -1
    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: 2
    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
  121. Rated: 3
    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: 3
    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
  122. 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: 1
    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
  123. Rated: 0
    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
  124. 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: 2
    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
  125. 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
  126. Rated: 0
    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
  127. Rated: 1
    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
  128. 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: 2
    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
  129. Rated: 1
    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: 3
    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
  130. Rated: -4
    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: -1
    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
  131. Rated: -3
    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: 0
    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
  132. Rated: 1
    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: 1
    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
  133. Rated: -1
    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: 1
    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
  134. Rated: -3
    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: 5
    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
  135. Rated: -2
    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: 5
    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
  136. Rated: 6
    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
  137. Rated: -1
    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: 1
    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
  138. Rated: -3
    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: -2
    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
  139. Rated: 2
    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: 7
    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
  140. 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: 0
    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
  141. Rated: 2
    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: -2
    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
  142. 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: 3
    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
  143. Rated: 0
    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
  144. 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
  145. Rated: 1
    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: -1
    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
  146. Rated: 0
    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: 2
    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
  147. Rated: -1
    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: -1
    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
  148. 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: -2
    Yes also for 800 D (all latest Models!)
    Answer by: Baader Web Team (Admin) on Nov 10, 2020 10:05:00 AM
  149. 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
  150. 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: 1
    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
  151. 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: 3
    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
  152. Rated: 2
    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: -1
    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
  153. Rated: -1
    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
  154. Rated: 3
    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: 2
    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
  155. Rated: -1
    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: -2
    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
  156. Rated: 2
    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: 3
    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
  157. Rated: -1
    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
  158. Rated: 0
    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: -1
    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
  159. Rated: 0
    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: 1
    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
  160. Rated: -1
    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: -1
    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
  161. 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: 0
    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
  162. 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: -3
    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
  163. 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
  164. Rated: -1
    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: 5
    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
  165. Rated: -1
    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: 0
    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
  166. Rated: -2
    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
  167. Rated: 0
    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
  168. Rated: 0
    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: 3
    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
  169. 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: 0
    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
  170. Rated: 1
    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: 5
    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
  171. 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: -1
    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
  172. 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: 2
    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
  173. Rated: 1
    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
  174. Rated: 1
    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
  175. Rated: 1
    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: -1
    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
  176. Rated: 1
    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
  177. 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: 0
    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
  178. Rated: 7
    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: 0
    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
  179. 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: 2
    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
  180. 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: 0
    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
  181. Rated: 2
    10/2/2020 9:28 AM Baader MaxBright® II Binoviewer with case
    Do you know when binoviewer will be available?

    Answer rated: 2
    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
  182. 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
  183. Rated: 6
    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: -1
    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
  184. 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: -1
    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
  185. Rated: -2
    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
  186. 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
  187. 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
  188. 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
  189. Rated: 7
    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: 5
    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
  190. 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: 2
    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
  191. 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
  192. 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
  193. 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: 3
    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
  194. Rated: -3
    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: 2
    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
  195. Rated: 0
    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
  196. 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: 1
    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
  197. 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
  198. Rated: 3
    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: 5
    We recommend 7nm so that exposure times will be acceptable
    Answer by: Baader Web Team (Admin) on Sep 14, 2020 11:58:00 AM
  199. 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: 2
    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
  200. Rated: -1
    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
  201. Rated: 3
    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
  202. Rated: 1
    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
  203. 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: -1
    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
  204. Rated: 2
    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: -4
    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
  205. Rated: 5
    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: 0
    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
  206. Rated: 5
    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
  207. Rated: -1
    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: -1
    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
  208. 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: -8
    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
  209. Rated: 3
    8/31/2020 4:27 PM 2" BDS-NT Baader Diamond Steeltrack® Focuser
    I need help choosing between # 2957210 and # 2957230

    Answer rated: 3
    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
  210. Rated: 3
    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: -3
    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
  211. 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
  212. Rated: 1
    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: -3
    Yes - this will work
    Answer by: Baader Web Team (Admin) on Aug 31, 2020 11:51:00 AM
  213. Rated: 3
    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
  214. Rated: 2
    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: 1
    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
  215. 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
  216. Rated: 2
    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
  217. Rated: -3
    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: 1
    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
  218. Rated: 3
    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
  219. Rated: 2
    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: 2
    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
  220. Rated: -2
    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: 3
    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
  221. Rated: -1
    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: 3
    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
  222. Rated: 1
    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
  223. 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: -1
    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
  224. 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: -3
    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
  225. Rated: 4
    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: -3
    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
  226. Rated: 4
    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
  227. 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: 10
    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
  228. 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: -1
    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
  229. Rated: 3
    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
  230. Rated: -1
    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: -1
    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
  231. Rated: 1
    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
  232. Rated: 2
    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: 2
    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
  233. Rated: 2
    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: -21
    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
  234. 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: 0
    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
  235. Rated: -9
    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
  236. 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: 0
    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
  237. 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: 1
    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
  238. Rated: -1
    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
  239. 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
  240. Rated: 1
    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
  241. Rated: 2
    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
  242. 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: 3
    No, this would be too long to fit.
    Answer by: Baader Web Team (Admin) on Jul 28, 2020 11:21:00 AM
  243. Rated: 2
    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: 2
    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
  244. Rated: -1
    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
  245. 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
  246. 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: 2
    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
  247. 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: 0
    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
  248. Rated: 3
    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: -1
    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
  249. 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: -1
    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
  250. Rated: 1
    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: -1
    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
  251. Rated: 2
    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?