Most Recent Product Questions
  1. Rated: 0
    10/15/2021 9:40 AM Baader T-2 BBHS ® Mirror Diagonal
    Would you recommend a T2 BBHS prism or T2 mirror diagonal for an f/8 apochromatic refractor?

    Answer rated: 0
    We recommend the BBHS mirror diagonals generally for apochromatic refractors. The prisms are preferably used when there is a short backfocus or other reasons that might speak against a mirror.
    Answer by: Baader Web Team (Admin) on Oct 15, 2021 9:45:00 AM
  2. Rated: -1
    10/14/2021 1:22 PM Baader Clearglass Filter (C) for focusing / dust protection
    Hi, when will you recieve more back in stock of these :Baader Clearglass Filter Ø 50.4mm (for focusing/dust protection), without mounting ring, just round filter glass?

    Answer rated: 0
    Currently some products are out of stock due to COVID delays in manufacturing and supply chains. Unfortunately, we cannot predict delivery times and have many thousands of customers, which we cannot inform individually when a product is available. Therefore we have developed two automatic tools which we would like to ask you to use.

    1st Newsletter:
    If you enter your email address here, you will receive a monthly newsletter with a lot of information about our products and new releases
    https://www.baader-planetarium.com/en/newsletter/

    2nd "Notification Tool"
    On the page of items that are currently not available, there is a field "Notify me when the product is available".
    If you enter your email address there you will be informed as soon as the product is in stock.

    Thanks for your understanding!
    Answer by: Baader Web Team (Admin) on Oct 14, 2021 3:54:00 PM
  3. Rated: 0
    10/13/2021 6:23 PM Baader Double T-Filterholder 1¼"
    Will this work in a telescope imaging train? Mainly between t adaptrer and t ring?

    Answer rated: 0
    Sorry this will not work. This product has "two" male threads - so to say. But t´he two parts you mention will require one male and one female thread.
    Answer by: Baader Web Team (Admin) on Oct 14, 2021 10:16:00 AM
  4. Rated: 0
    10/12/2021 10:41 PM Baader H-alpha f/2 Ultra-Highspeed-Filters (3.5nm) – CMOS-optimized
    I have a fast newtonian Astrograph (F/3) and a moderately fast Refractor (F/4.5) Would the UNB f/2 filters proved acceptable transmission with the F/4.5? Can you provide a number for transmisison of the filter set for a F/4.5 telescope? Would you recommend the normal UNB filters instead?

    Answer rated: 1
    For f/4.5 we can only recommend the regular ultra-narrowbands – the f/2 family will not work.
    We will not speculate on possible transmission of f/2 filters when used at f/4.5, because any loss of s/n will be bad.
    Answer by: Baader Web Team (Admin) on Oct 13, 2021 8:32:00 AM
  5. Rated: -1
    10/12/2021 3:22 PM Mark V Großfeld (Giant)-Binocular
    A question about Mark V Großfeld,
    When will this little wonder be available again?


    Answer rated: 0
    Currently many products are out of stock due to COVID delays in manufacturing and supply chains. Unfortunately, we cannot predict delivery times and have many customers, which we cannot inform individually when a product is available. Therefore we have developed two automatic tools which we would like to ask you to use.
    1st Newsletter:
    If you enter your email address here, you will receive a monthly newsletter with a lot of information about our products and new releases
    https://www.baader-planetarium.com/en/newsletter/
    2nd "Notification Tool"
    On the page of items that are currently not available, there is a field "Notify me when the product is available".
    If you enter your email address there you will be informed as soon as the product is in stock.
    Sorry and thank you for your understanding!
    Answer by: Baader Web Team (Admin) on Oct 13, 2021 8:32:00 AM
  6. Rated: 0
    10/11/2021 11:20 AM RCC I, Rowe Coma Corrector
    I own an RCC coma corrector and I wish to extend it to different uses.
    I need to know the transmission ratios to the following bandwidth:
    Calcium bandwidth : 393.368 and 396,847 nm.
    H-alpha : 656,281 nm
    IR : 740nm and more.
    CH4 : 890nm
    My big problem is that I suspect it to be fully opaque to CH4...
    Thank you in advance.
    Christophe de la Chapelle.

    Answer rated: 0
    We are very sorry - the coatings and the optical design of the RCC1 is set for visual only (~420nm to 750 nm).

    Below 400 nm and above 750 nm not just the optics calculation of the RCC1 but also the camera and other elements in the optical train might be "blind" to UV and very low at 890 nm - just as you suspect.

    Transmission at H-alpha is ~98% - but we never actually measured or calculated for transmission above or below VIS.
    Answer by: Baader Web Team (Admin) on Oct 12, 2021 7:59:00 AM
  7. Rated: 0
    10/10/2021 1:04 AM Baader Hyperion Universal Zoom Mark IV, 8-24mm eyepiece (1¼" / 2")
    How do the folding rubber eyecup and the eyecup with foldable winged shield fit onto the M-43 thread??? The only eyecup that fits is the standard eyecup. The other eyecups are too small and just sit loose inside the M-43 thread. Am I supposed to remove the M-43 thread for the other eyecups to fit. I need the smaller eyecups for a binoviewer? Thanks

    Answer rated: 0
    If you unscrew the regular, wide eyecup, the eyepiece looks like this
    https://www.baader-planetarium.com/media/wysiwyg/product_info/hyperion-universal-zoom/universal-zoom-kameraseitige-anschluesse.jpg
    and you can access the M43-thread.
    The foldable eyecup and the winged foldable eyecup should fit onto the M43-thread. You don't screw them onto the thread, but you pull them over the thread, then they stay on their place like a rubber band. Especially in the beginning this may be very tight, as they may widen over time like any elastic material - so it's better if they fit tight now, then if they are too loose. If they are in place for bino-use, it looks like this:
    https://www.baader-planetarium.com/media/wysiwyg/product_info/hyperion-universal-zoom/hyperion-universal-zoom-eyecups.jpg
    Answer by: Baader Web Team (Admin) on Oct 17, 2021 10:48:00 AM
  8. Rated: -1
    10/9/2021 5:11 PM Bundle: Hyperion Universal Zoom Mark IV with Hyperion-Barlow 2.25x (8-24mm / 3.6-10.7mm)
    I have the Zoom Mark IV and 2.25x barlow. How can I attach them (or at least the Zoom) to a Canon EOS RP mirrorless camera to use with my Celestron NexStar 8e telescope? Thank you.

    Answer rated: 0
    Please take a look at this PDF Manual:
    https://www.baader-planetarium.com/en/downloads/dl/file/id/444/product/1211/digiscoping_camera_adaptations_for_afocal_photography_and_eyepiece_projection.pdf
    Rule of thumb is that the distance between camera and eye piece should be the diagonal of the sensor. Also please notice that the camera is
    rotating when you´re zooming. The quick change ringe then is a helpful tool. Best is to start without the barlow because this set up produces
    already high effective focal lengthes. A possible setup you can see here:
    https://assets.baader-planetarium.com/media/extendware/ewimageopt/media/inline/b8/1/baader-hyperion-universal-zoom-mark-iv-8-24mm-eyepiece-1-1-4-2-ac5.jpg
    I recommend two 15mm extender rings to receive the correct distance.
    Answer by: Baader Web Team (Admin) on Oct 11, 2021 10:06:00 AM
  9. Rated: 0
    10/6/2021 2:45 PM Baader Solar Continuum Filter 1¼" (double stacked)
    I have an older Solar Continuum filter (purchased in 2013) and an UV/IR block filter increases the image quality with the monochrome cameras I am using, probably because of the IR-leak of the Solar Continuum filter.
    I am planning to buy the double stacked version, do I still need an additional UV/IR block filter with the current version of these filters?

    Answer rated: 0
    The stacked SCF will not require to add an additional blocker.
    Answer by: Baader Web Team (Admin) on Oct 7, 2021 8:35:00 AM
  10. Rated: 0
    10/5/2021 10:52 PM 2" MPCC Mark III (Multi-Purpose Coma Corrector for Newtons)
    How long is the nose of the MPCC up to the stop ring? Why don't you publish these details?

    Answer rated: -2
    The length you´re asking for is 23,5mm. Yet nobody where asking for this length and actually every 2" focuser should take the MPCC without any
    problems.
    Answer by: Baader Web Team (Admin) on Oct 7, 2021 8:27:00 AM
  11. Rated: 0
    10/4/2021 4:48 PM Baader D-ERF Energy Rejection Filter (75 - 180mm)
    How can I tell which side is which on an older erf filter I have. I cannot tell which side is gold or blue. I CAN tell that one side is more reflective on its front surface giving a crisper reflection than the other side. Should that side face the sun??

    Answer rated: -1
    Yes, that is correct. The more reflective side should face the sun.
    Answer by: Baader Web Team (Admin) on Oct 5, 2021 9:21:00 AM
  12. Rated: 0
    10/4/2021 4:21 PM Baader UFC-Tilter
    Has the Baader UFC-Tilter # 2459146 any inner thread in the internal circle? If so, which size has it?

    Answer rated: 0
    What you see in the image is not a thread unfortunately, but an anti-reflection groove. Maybe the M68 Tilter serves your purposes better, because this indeed features a M68 female thread: https://www.baader-planetarium.com/en/accessories/adapters-imaging-accessories/m68-zeiss/baader-m68-tilter.html
    Answer by: Baader Web Team (Admin) on Oct 5, 2021 8:53:00 AM
  13. Rated: -1
    10/1/2021 1:27 PM Steeldrive II motor focuser with Controller
    How can I make sure that always the same COM-Port is used?

    Answer rated: 0
    The COM-port is managed by Windows; the SteelDrive can't change it. Usually, the device should always use the same COM-port on the same computer, as long as it is always connected to the same USB-port. We recommend that you set up a SteelGo II profile on every computer on which you use it.

    The programme "ComPortMan" by Uwe Sieber should make it possible to set the COM-port numbers permanently. You may want to try it out: www.uwe-sieber.de/ComPortMan.html Please note that this software does not originate from us and we therefore cannot assume any guarantee for it.
    Answer by: Baader Web Team (Admin) on Oct 1, 2021 1:28:00 PM
  14. Rated: 1
    10/1/2021 1:23 AM 2" BDS-NT Baader Diamond Steeltrack® Focuser
    Can I install 2" clicklock on the focuser? Would tell me the part number?

    Answer rated: -2
    Yes, you need our Baader 2" ClickLock S58 clamp with ring-dovetail (Baader Diamond Steeltrack) #2956258
    https://www.baader-planetarium.com/en/accessories/adapters-imaging-accessories/eyepiece-clamps/baader-2%22-clicklock-eyepiece-clamps.html#574=936
    Answer by: Baader Web Team (Admin) on Oct 1, 2021 7:25:00 AM
  15. Rated: 1
    9/30/2021 12:04 AM Baader Wide-T-Ring Sony E/NEX Bayonet with D52i/M48 to T-2 und S52
    If I use this on my Sony A7iii and connect directly to a nexstar 8SE with a focal reducer, what would be the correct back focus?

    Answer rated: 0
    The backfocus length is 105mm. You can reach this length by using this adapter (which is 50mm long):
    https://www.celestron.de/ce_de/t-adapter-(c5-6-8-9-14-11-14).html
    This is also made to receive 55mm DSLR cameras (e.g. 11mm T2 bayonet ring and 44mm canon body).
    Your Sony camera body has a back focus length of 18mm (E bayonet=eighteen) plus 8,3mm our whide T-ring is 26,3mm so you need
    an extender with the length of 28,7mm to come to the required 55mm.
    https://www.baader-planetarium.com/en/baader-variable-locking-t-2-extension-(12-16mm)-incl.-lock-ring-(t-2-part-33).html set to 13,7mm
    https://www.baader-planetarium.com/en/baader-t-2--15-mm-extension-tube-(t-2-part-25a).html
    Answer by: Baader Web Team (Admin) on Sep 30, 2021 9:03:00 AM
  16. Rated: -1
    9/29/2021 9:44 AM Baader 2" ClickLock eyepiece clamps (from T-2 to 4,1")
    Which model should I use for a Baader T-2 Maxbright Mirror Diagonal?

    Answer rated: 0
    #2956242 M42i x 0,75-ClickLock (Astro T-2 System) is the right one.
    Answer by: Baader Web Team (Admin) on Sep 30, 2021 9:20:00 AM
  17. Rated: 0
    9/28/2021 6:19 AM BCF 2 - DSLR Astro Conversion Filter for Canon Full-Format Cameras (all latest Models)
    Is this filter compatible with canon mirrorless cameras? (Eg; Canon R6)

    Answer rated: 0
    No, it is not compatible
    Answer by: Baader Web Team (Admin) on Oct 5, 2021 8:42:00 AM
  18. Rated: -2
    9/26/2021 2:46 AM Baader Clearglass Filter (C) for focusing / dust protection
    Hi, is this filter AR-coated?

    Answer rated: 0
    Yes, the filter is dielectrically coated and planeoptically polished. Please note that also the edges are coated to prevent ageing of the filter - these filters are coated once they are finished and not cut from a coated piece of glass. You can read more about the manufacturing process here: https://www.baader-planetarium.com/en/blog/information-about-baader-filters-and-filtercells/
    Answer by: Baader Web Team (Admin) on Sep 27, 2021 12:46:00 PM
  19. Rated: 0
    9/26/2021 2:42 AM Baader Clearglass Filter (C) for focusing / dust protection
    How much light is transmitted, i.e. light loss subtracted in percentage of the incoming light, compared to exit value?

    Answer rated: 0
    You can see the transmission curve of the filter if you select the desired filter size. Then, the curve will appear as one of the product images.
    Answer by: Baader Web Team (Admin) on Sep 27, 2021 12:42:00 PM
  20. Rated: -2
    9/26/2021 2:42 AM Baader UV/IR Cut / L-Filter
    How much light is transmitted, i.e. light loss subtracted in percentage of the incoming light, compared to exit value?

    Answer rated: 0
    You can see the transmission curve of the filter if you select the desired filter size. Then, the curve will appear as one of the product images.
    Answer by: Baader Web Team (Admin) on Sep 27, 2021 12:44:00 PM
  21. Rated: -1
    9/22/2021 6:34 AM Adapter M68i to M63a (Feathertouch 2.5", TS-Optics)
    Will this M68 to M63 adapter work with the telescope side of the 2” ultra low profile M68/M60 eyepiece clamp? (so that the 2” ultra low profile clamp can then be attached to a M63x1mm female threaded telescope draw tube)

    Answer rated: -1
    Unfortunately this won't work because the M60 thread of the 2"/M68 Ultra Short clamp #2458196 wont fit into the 58mm clear diameter of the M63a/M68i adapter. It will work in combination with a 7.5mm M68 extension #2458212 in between. Alternatively you could of course also remove the M60 thread on a lathe.
    Answer by: Baader Web Team (Admin) on Sep 22, 2021 4:26:00 PM
  22. Rated: 1
    9/20/2021 5:10 PM Glasspathcorrector 1:1,25 for Baader-Binoviewer with Zeiss ring dovetail (MaxBright® II and Mark V)
    I would like to know how to check the way of the lens of 2456314Z or 2456314. Because I forgot whether my 2456314 was modified the way of the lens cell for markV which is used with newtonian GPC currently.
    Best regards
    Yutaka Takagi

    Answer rated: 2
    The side facing the telescope is convex, the side facing the binoviewer is almost flat - respectively a little concave.
    Answer by: Baader Web Team (Admin) on Sep 21, 2021 7:13:00 AM
  23. Rated: -1
    9/19/2021 6:29 AM Universal Red Dot Mount RDM
    Can you please tell me the center to center spacing between the two threaded holes for M5 hex screws that attach RDM to the dovetail base? I am planning to order a custom V-style clamp that will attach the RDM to a vixen dovteail bar, and will need this hole spacing to have the counterbored holes machined into the part.

    Answer rated: 1
    The required spacing is 20 mm. We included also a new image that illustrates this better: https://assets.baader-planetarium.com/media/extendware/ewimageopt/media/inline/1e/8/universal-red-dot-mount-rdm-eb0.jpg
    Answer by: Baader Web Team (Admin) on Sep 21, 2021 12:45:00 PM
  24. Rated: 0
    9/18/2021 11:03 AM Baader 3.5 / 4nm f/2 Ultra-Highspeed Filter-Set – CMOS-optimized (H-alpha / O-III / S-II)
    I'am using de 2" Ultra High Speed filters Ha, SII en OIII for my C14 Hyperstar. Can you tell me which side of the filter should point to the camera? Or does this not matter.

    Answer rated: 0
    In mounted form the male thread must point towards the camera. The filter is already mounted in the cell in the correct way to achieve this.
    Answer by: Baader Web Team (Admin) on Sep 21, 2021 9:23:00 AM
  25. Rated: -1
    9/11/2021 5:25 PM Baader S-II Narrowband-Filters (6.5nm) – CMOS-optimized
    Is the Baader S-II 2" Narrowband-Filter (6.5nm) – CMOS-optimized the same as the discontinued Baader S-II 8nm CCD Narrowband-Filter 2" would the CMOS optimised version be parfocal with the older standard CCD versions of this filter?

    Answer rated: 1
    If your optics is so well color corrected that parvocality only means to keep the filter thickness the same as befoire, then indeed the new CMOS-optimized filters are parfocal to all Baader-filters as we try to keep the substrate thickness consistent troughout all our filters.
    Otherwise we want to confirm that the new CMOS-optimized filters are on a much higher level of coating technology compared to the previous ones.
    Answer by: Baader Web Team (Admin) on Sep 13, 2021 8:34:00 AM
  26. Rated: 2
    9/8/2021 2:31 PM BCF 2 - DSLR Astro Conversion Filter for Canon Full-Format Cameras (all latest Models)
    I bfc2 campatible with 6d mark 1?

    Answer rated: 2
    Yes this filter fits in 6D I
    Answer by: Baader Web Team (Admin) on Sep 8, 2021 2:49:00 PM
  27. Rated: 1
    9/8/2021 11:15 AM Baader M68 Tele-Compendium
    I have a TZ-3 telecentric lens. Can it be fitted into the Tele-Compendium, considering that the TZ-3 has a 2" opening on the front side, while the Telecompendium apparently has a T-2 adapter. Being the TZ-3 useful aperture larger than the T-2 diameter, would that represent a drawback for the ideal optical configuration?

    Answer rated: -2
    The telecompendium has a 2" thread inside on the telescope side, into which a 2"/T-2 reducer is screwed. If you take this out, you have a 2" internal thread and can screw on the TZ-3 directly. In addition, the focal point of the telescope is approximately in the center of the TZ-3.
    Therefore the beam at the entrance of the TZ-3 is very narrow and fits through the 25mm opening there. Only in the TZ the beam path is widened and parallelized so that even a Halpha filter with 46mm free aperture is fully illuminated.
    Answer by: Baader Web Team (Admin) on Sep 10, 2021 9:36:00 AM
  28. Rated: -5
    9/4/2021 6:17 PM Baader UFC (Universal Filter Changer)
    What parts do I need to connect the UFC to my eyepiece and telescope? My eyepiece is your Baader Hyperion Mark IV using the 2" nosepiece. My telescope is an Apertura AD8 dobsonian with a 2" Crawford focuser.

    Answer rated: 6
    This can be done e.g. with:
    Baader 2" Safety Kerf nosepiece with 2" filter thread # 2408156
    Baader UFC S70 / 2" SC-thread (f) Telescope-Adapter (optical height: 1 mm) # 2459128
    Baader UFC Base (Filter Chamber) telescope-sided S70 dovetail receptor (optical height: 13 mm) # 2459110
    Baader UFC 2" (m) SC Camera-Adapter (optical height: 2 mm) # 2459120
    Baader 2" ClickLock SC/HD (2") clamp (C5" - C9¼") (optical height: 47 mm) #2956220
    Please note that this will add 63mm to your focuser. At a Newtonian which has got an extension to reach focus with eyepieces, you need to remove this extension; it may work. Please check the focus position of your telescope to find out if you have at least 63mm of backfocus available when you remove the extension.

    You could also use
    Baader 2" Safety Kerf nosepiece with 2" filter thread # 2408156
    Baader UFC S70 / 2" SC-thread (f) Telescope-Adapter (optical height: 1 mm) # 2459128
    Baader UFC Base (Filter Chamber) telescope-sided S70 dovetail receptor (optical height: 13 mm) # 2459110
    Baader UFC M48 (m) Camera-Adapter (optical height: 2 mm) # 2459116
    Baader 2" ClickLock M48i clamp (2" filter/photo thread) (optical height: 36,5 mm) 2956248
    which would be about 1cm shorter, but then you are limited to eyepieces with shorter nosepieces (about 30-35mm).

    If possible, you should remove the 2"-clamp of your telescope - maybe there is a thread belwo, to which the UFC can be attached with a matching telescope adapter. Unfortunately,, we do not know that specific telescope and do not know if tehre is a thread and which dimensions it has got.
    Answer by: Baader Web Team (Admin) on Sep 6, 2021 8:47:00 AM
  29. Rated: -3
    9/2/2021 7:49 PM 6,5 mm Morpheus® 76° widefield eyepiece
    Does this eyepiece work with my Sky-Watcher Skyliner-200P - 1200 mm (f/5,9) Dobson telescope?
    I already have a Barlow GSO ED 2x 2”, should this work together?

    Answer rated: 1
    GSO Barlow x2 is a 2” with ED FMC treated glasses and has a very nice quality. Then which Barlow you should recommend instead? Thanks!
    Answer by: Joao Pinhao on Sep 3, 2021 9:31:35 AM
    Answer rated: -1
    The eyepiece will work very well with your telescope but we cannot guarantee how good the image will be with GSO Barlow attached, we never tried this combination
    Answer by: Baader Web Team (Admin) on Sep 3, 2021 8:15:00 AM
  30. Rated: 2
    8/30/2021 8:17 PM Baader Expansion Ring 2"a/T-2i with 1mm optical path length (T-2 part #28)
    I'd like to use ring 2958242 to attach Mark IV zoom to a Tasco spotting scope. This spotting scope has a detachable eyepiece but I can't mount zoom directly on it. This spotting scope has a T2 external thread, so my plan is to screw expansion ring to the T2 male thread and the Mark IV to the 50,8 thread, through the ring used for 2" barrell. Would it work? Thanks in advance.

    Answer rated: 4
    It is woth trying carefully it with the zero-length adapter 2"a / T-2i x 1 #2454833 - this brings the eyepiece as close as possible to the spotting scope, so chances are very good that it works (if any eyepiece besides the original one works at all).
    But we haven't had a chance to test it at every spotting scope.
    Answer by: Baader Web Team (Admin) on Sep 1, 2021 12:02:00 PM
  31. Rated: -2
    8/28/2021 11:25 PM Baader 3.5 / 4nm f/2 Ultra-Highspeed Filter-Set – CMOS-optimized (H-alpha / O-III / S-II)
    What is the actual disadvantage of using these filters with a Kodak KAF 12600 CCD mono chip. What is the resistance of these filters, especially the OIII, to bright star hallows caused by fast optics.

    Answer rated: 0
    There is no disadvantage when using the filters with CCD cameras instead of CMOS cameras. These all new CMOS-optimized filters work magnificently with all existing digital camera technologies, be it CMOS or CCD. Our testers and customers have proven that halos created by fast optics get reduced significantly or even disappear completely. Please see here https://www.baader-planetarium.com/en/blog/new-baader-cmos-optimized-ultra-narrowband-and-highspeed-filters/
    Answer by: Baader Web Team (Admin) on Aug 31, 2021 8:27:00 AM
  32. Rated: -1
    8/28/2021 8:05 PM Baader 2" ClickLock eyepiece clamps (from T-2 to 4,1")
    Does the Baader 2" ClickLock for SCT come with a 1.25" adapter for a diagonal of that size? And what is the weight of the ClickLock clamp?

    Answer rated: -5
    The 2" to 1,25" reducer is not included with the SCT Clicklock Clamp. The clamps weight is 170g
    Answer by: Baader Web Team (Admin) on Aug 30, 2021 8:14:00 AM
  33. Rated: 0
    8/28/2021 11:52 AM Baader Pan 3 "/ EQ Dual clamp 230mm (for Losmandy and Vixen-standard)
    Would this be compatible with a 10micron GM2000 mount?

    Answer rated: 1
    Yes this clamp fits onto GM 2000 mounts
    Answer by: Baader Web Team (Admin) on Aug 30, 2021 8:11:00 AM
  34. Rated: -1
    8/26/2021 9:10 PM Baader Machine-Grease #1 Teflon-Brown (-15°C–+55°C)
    Currently I own a Vixen GP-DX SkySensor 2000PC mount (+25 years old). with good polar, 3-star alignment and a DSO not to low in the sky I'm able to shoot DSO's with pin point stars with an exposure time between 1 and 2 minutes carrying a Takahashi TSA-102. Nevertheless, it needs re-greasing because the last year the mount moves stiffer and stiffer and exposure times are decreasing. My question is which type of grease will best fit my old mount the Teflon-Brown or the Teflon-White. what grease would you recommend?

    With kind regards,
    Ronald Bemelmans

    Answer rated: -1
    Teflon white will be the right choice for you https://www.baader-planetarium.com/en/baader-machine-grease-2-teflon-white-(-25%C2%B0c%E2%80%9340%C2%B0c).html
    Answer by: Baader Web Team (Admin) on Aug 27, 2021 8:59:00 AM
  35. Rated: -4
    8/26/2021 9:04 PM Baader M68-Tilter
    Do you think this tilter adapter can support heavy cameras such as a Moravian G3 with its filter wheel? It appears more designed for light and cylindrical cameras.

    Answer rated: -1
    Yes, the tilter will be strong enough to hold your camera with filter wheel
    Answer by: Baader Web Team (Admin) on Aug 27, 2021 9:01:00 AM
  36. Rated: 1
    8/25/2021 10:02 PM Baader M68-Tilter
    Do you plan to provide the same tilt corrector with M42 or M48 thread instead of M68 ?
    If not, how can I adapt it on my photo set up with M42 or M48 thread ?
    Thank you !

    Answer rated: 1
    We are working on an answer to your question. Please keep an eye on our blog, there we will publish an post soon. Thank you for your patience.
    Answer by: Baader Web Team (Admin) on Aug 26, 2021 8:34:00 AM
    Answer rated: -2
    At the moment, we do not plan a smaller M48-unit, as the wider diameter allows for finer adjustments. So, at least in the near future, there will be no M48-version.

    But you can adapt the M68-tilter to M48 or T-2 as follows:

    Telescope with male T2a thread
    Baader Expansion Ring 2"a/T-2i with 1mm optical path length (T-2 part #28) # 2958242
    M68 to 2" UNFi Conversion Ring # 2458232
    Baader M68 Conversion Ring # 2458195
    Baader M68-Tilter # 2458170
    M68 to T-2 Conversion Ring # 2458233
    Eyepiece/camera with female M48-thread

    and for M48:

    teleskope male M48a thread
    2"a / M48i Zero-length reducing piece (zero optical length) # 2454834
    M68 to 2" UNFi Conversion Ring # 2458232
    Baader M68 Conversion Ring # 2458195
    Baader M68-Tilter # 2458170
    M68a to M48a Reducing piece # 2458229
    Eyepiece/camera with female M48-thread

    As the M48 reducing piece is zero-length, for better handling you may have to attach it to your camera first before attaching both to the tilter.
    Answer by: Baader Web Team (Admin) on Aug 26, 2021 10:41:00 AM
  37. Rated: -4
    8/25/2021 4:09 AM Baader H-alpha 35nm CCD Filter
    Is this filter UV blocked?

    Answer rated: 1
    Yes, the filter is blocked in UV
    Answer by: Baader Web Team (Admin) on Aug 26, 2021 10:32:00 AM
  38. Rated: 1
    8/24/2021 2:33 AM 2" Research Grade TZ-3 Telecentric System (3x focal length)
    Other than the obvious differences in magnification and position of the focal spots, is the TZ3 significantly different from the TZ2 ? I currently have a TZ2 on a home-built Halpha system and it is giving great results but I'd like a little more magnification. The TZ3 seems to have a different appearance than the TZ2 and TZ4 and is marketed toward SolarSpectrum etalons. Is there anything special about the TZ3 that makes it significantly different from the TZ2 and TZ4 ?

    Answer rated: -1
    The main difference between TZ-3 and the older constructions TZ-2 and TZ-4 is that TZ-3 has 46mm clear aperture at the H-alpha-filter entrance side. This is suitable for research grade SolarSpectrum H-alpha filters. Another difference is the longer working distance of 250mm for optimized focal length reduction with a telecompressor and suitable room for adapting a binocular viewer. Optically the image quality is as good as you know it from your TZ-2.
    Answer by: Baader Web Team (Admin) on Aug 24, 2021 9:32:00 AM
  39. Rated: 2
    8/20/2021 4:37 AM 2" BDS-SC Baader Diamond Steeltrack® Focuser
    I would like to place my Celestron 6.3 reducer behind a 2" BDS-SC Baader Diamond Steeltrack® Focuser. Is there a direct connection or do I need to use a nosepiece and the compression rings of the focuser ?

    Answer rated: -4
    There is no direct adaptation, but you might use e.g. Diamond Steeltrack® M48 Adapter # 2957204 plus 2"a / M48i Zero-length reducing piece (zero optical length) # 2454834 to connect the Celestron-reducer directly to the focuser.
    Answer by: Baader Web Team (Admin) on Aug 23, 2021 9:54:00 AM
  40. Rated: 2
    8/19/2021 3:05 PM Baader Hyperion Universal Zoom Mark IV, 8-24mm eyepiece (1¼" / 2")
    I have a Sony A7RIII 35mm Full frame mirrorless digital camera. Please advise the adapters I would need to connect my Mark IV universal zoom to this camera.

  41. Rated: 3
    8/18/2021 10:19 AM StarAid Revolution Standalone Autoguiding - Revision A
    Does it work in the Southern hemisphere with only faint little Octans as our polar alignment?

    Answer rated: -2
    StarAid is doing the alignment via Plate Solving technology and therefore does not need specific stars for polar alignment. It analyzes star patterns somewhere in the sky, its not even necessary to have the free view to the pole star or Octans.
    Answer by: Baader Web Team (Admin) on Aug 18, 2021 11:28:00 AM
  42. Rated: 5
    8/18/2021 3:12 AM Baader 2" BBHS ® Mirror Diagonal with 2" ClickLock Clamp
    Forgive the question, but is there any update on projected availability of the product? Many thanks.

    Answer rated: -1
    We are very sorry, many products are still out of stock due to COVID delays in manufacturing and supply chains. Unfortunately, we cannot predict delivery times and h we cannot inform individually when a product is available. Therefore we have developed two automatic tools which we would like to ask you to use.

    1st Newsletter:
    If you enter your email address here, you will receive a monthly newsletter with a lot of information about our products and new releases
    https://www.baader-planetarium.com/en/newsletter/

    2nd "Notification Tool"
    On the page of items that are currently not available, there is a field "Notify me when the product is available".
    If you enter your email address there you will be informed as soon as the product is in stock.

    Thanks for your understanding!
    Answer by: Baader Web Team (Admin) on Aug 18, 2021 8:52:00 AM
  43. Rated: 1
    8/17/2021 8:19 AM Baader D-ERF Energy Rejection Filter (75 - 180mm)
    Is possible use the d-erf with my telescope celestron 127slt?

    Answer rated: 0
    An DERF cannot be used "stand alone" for observing the sun! This would be dangerous because the image is way too bright and will immediately damage your eye permanently! DERF filters are only suitable in combination with an SolarSpectrum filter https://www.baader-planetarium.com/en/solar-observation/solar-spectrum-h-alpha-filters.html
    Answer by: Baader Web Team (Admin) on Aug 17, 2021 9:19:00 AM
  44. Rated: 0
    8/17/2021 5:54 AM Baader Tripod Adapter Flange for NexStar SE / EVO
    Will this adapter also fit the Avalon T-pod 110/130?

    Answer rated: 1
    It will only fit on Baader T-Pod,https://www.baader-planetarium.com/en/accessories/mount-accessories/tripods-pillars/baader-t-pod-aluminium-tripod-95-130cm.html not on the Avalon T-Pod
    Answer by: Baader Web Team (Admin) on Aug 17, 2021 9:22:00 AM
  45. Rated: 4
    8/16/2021 7:50 PM Baader Tripod Adapter Flange for NexStar SE / EVO
    Is this adapter compatible with Avalon T-pod 110?

    Answer rated: -2
    It will only fit on Baader T-Pod,https://www.baader-planetarium.com/en/accessories/mount-accessories/tripods-pillars/baader-t-pod-aluminium-tripod-95-130cm.html not on the Avalon T-Pod
    Answer by: Baader Web Team (Admin) on Aug 17, 2021 9:24:00 AM
  46. Rated: 3
    8/15/2021 8:52 AM 2" BDS-RT Baader Diamond Steeltrack Focuser
    Do you have an RT which will fit a William Optics Zenithstar 66 SD?

    Also is the ZWO EAF compatible with this focuser?

    Answer rated: 2
    Much to our regret, we are unable to keep track of all industries telescopes and adaptation necessities. There are a number of dealers that specialize in adapting our equipment onto telescope-brands that we ourselve do not carry in our own portfolio. Maybe please do a google search using the necessary keywords to find a dealer that sells these brands and can give you advise.
    Answer by: Baader Web Team (Admin) on Aug 16, 2021 9:03:00 AM
  47. Rated: -6
    8/11/2021 12:15 AM Baader Sky-Surfer III red dot finder
    Re Skysurfer III : What is the FOV (deg) that the 30mm aperture provides. It is not mentioned in the manual.

    Answer rated: 1
    It does not really have a field of view – it displays a red dot on a glass disc with ca. 30mm diameter. But as it doesn't have any magnification, the "field of view" depends on your distance from the SkySurfer – just paint a 30mm-circle on a piece of transparent plastic or cut a 30mm-ring out of cardboard, then you can imagine the field of view depending on your distance.

    Because of the coated glass, you can see the red dot between the stars with the plastic holding ring as an aid to find the red dot. The larger piece of glass makes it easier to locate both the red dot and the target at the night sky, while providing a better protection from dew.
    Answer by: Baader Web Team (Admin) on Aug 11, 2021 11:02:00 PM
  48. Rated: 2
    8/10/2021 8:04 AM RCC I, Rowe Coma Corrector
    How far should I insert the coma corrector into the focuser? Until it stops?

    Answer rated: -1
    Yes - exactly!
    Answer by: Baader Web Team (Admin) on Aug 10, 2021 12:49:00 PM
  49. Rated: 3
    8/9/2021 1:12 AM 2" BDS-NT Baader Diamond Steeltrack® Focuser
    Hello, will this fit a 10inch Newtonian? Skywatcher.

    Answer rated: 1
    This should fit. But please to make sure have a look at the distance of the screw holes on your telescope and compare with the drawings in the manual https://www.baader-planetarium.com/en/downloads/dl/file/id/175/product/2859/instruction_manual_for_all_baader_diamond_steeltrack_bds.pdf
    Answer by: Baader Web Team (Admin) on Aug 9, 2021 9:33:00 AM
  50. Rated: -1
    8/4/2021 4:42 PM Baader FlipMirror II Star Diagonal
    I can't find any stars in the Off-Axis-Guider behind a Reducer. What's happening?

    Answer rated: -2
    A reducers does not only reduce the focal length, but also the image circle: The beam of light is much steeper behind the reducer than in ffront of it. For example, the 0.7x EdgeHD reducer #94242 for the 8" EdgeHD illuminates only an image circle of approximately 30mm for APS-C-cameras . The prism of an Off-Axis-Guider like the one in the FlipMirror II is positioned in such a way that it doesn't block a full-frame camera sensor. But if the light beam of the telescope becomes too small, the prism is in the darkness outside of the telescope's light path. Then, even an extremely sensitive guiding camera can't see any stars. In this case, an Off-Axis-Guider can only be used in front of the reducer – if this is possible by the optical design of reducer and telescope. (The image circle e.g. of an EdgeHD 925 with reducer is already much larger.)
    Answer by: Baader Web Team (Admin) on Aug 4, 2021 4:49:00 PM
  51. Rated: -1
    8/3/2021 9:54 AM 2" BDS-SC Baader Diamond Steeltrack® Focuser
    Will it work with a 6" Classical Cassegrain? And if so, will it reach focus on its own, without the need for extension rings?

    Answer rated: 2
    To answer this question, we need to know the backfocus of your telescope. If it is not given in the instructions, you need to measure it.
    Eitherpoint it at the moon and put a piece of of paper behind it, so that you can see a sharp image - the distance between paper and telescope is the back focus. Or, if you already have a focuser, point it at the stars with either a camera attached or star diagonal and eyepiece, and measure the length of your focuser. Pleas note that eyepieces, DSLRs and astronomical cameras all have different optical lengths! A DSLR requires 55mm of backfocus, a CCD-camera often only about 1cm, and a 2" star diagonal about 11cm - so may work with an eyepiece and star diagonal without extensions, while a CCD-camera may require an extension.

    The SC-version of the Steeltrack has got a focus travel of 30mm, so if you are switching between a 2" star diagonal and an astronomical CCD-camera, you will require an extension. The possible minimum heights are as follows
    as supplied, incl. 2" clamp: 93 mm
    with optional S58 direct-thread adapters: 80 mm

    The RT-version for refractors may fit too, it has got a longer focus travel of 80mm and the following minimum lengths:
    as supplied, incl. 2" clamp: 70 mm
    with optional S58 direct-thread adapters: 59 mm
    with optional S58-ClickLock clamp: 89 mm
    You have to check the manual to see if one of the adapter threads matches your telescope, or if you need to manufacture a special adapter.

    The SC version has got a shorter focus travel as you are more flexible with a Schmidt-Cassegrain and its moveable ain mirror than with a refractor telescope.
    Answer by: Baader Web Team (Admin) on Aug 3, 2021 11:16:00 AM
  52. Rated: -4
    8/1/2021 9:53 PM Baader MaxBright® II Binoviewer with case
    The nosepiece and eyepiece holder of my Celestron star diagonal can be both removed leaving a 2" SC female thread. To attach the MaxBrite II to that star diagonal will I be able to do it with the Baader Adapter 2" (male) / T-2 (male) [Part # 1508035] or will I need any extra adapters. I thought first maybe the Baader 2" SCT to T-2 Zero-Length Reducer Adapter, but I don't think that will work. Any help you can give would be greatly appreciated.

    Answer rated: 0
    Baader Adapter 2" (male) / T-2 (male) [Part # 1508035] should work, this is the same solution which we use for our Herschel wedge, as described on page 17/18 of the MaxBright manual: https://www.baader-planetarium.com/en/downloads/dl/file/id/1614/product/4317/manual_baader_maxbrightr_ii_binoviewer.pdf
    A quick changer is recommended, so that you can more easily rotate the binoviewer into a conveniant position.
    Answer by: Baader Web Team (Admin) on Aug 3, 2021 11:34:00 AM
  53. Rated: -3
    7/30/2021 8:56 PM Baader 2" ClickLock eyepiece clamps (from T-2 to 4,1")
    which adapter is needed for a celestron C11 A ? I am looking to upgrade optical train from the 1.25" visual back supplied by Celestron. thank you in advance

    Answer rated: 0
    If you want to attach the ClickLock 2" clamp to the 2" adapter please choose #2956220 SC / HD (2")-Clicklock (5" SC, 6" SC/HD, 8" SC/HD and 9¼" SC). Otherwise, if you want to attach the clamp directly to the big 3,3" thread on the rear end of your telescope, choose #2956233 SCL (3,3")-ClickLock (9¼" HD, 11" SC/HD and 14" SC/HD)
    Answer by: Baader Web Team (Admin) on Aug 2, 2021 8:16:00 AM
  54. Rated: 5
    7/28/2021 1:55 AM Baader Sky-Surfer III red dot finder
    I need to replace a broken RDF on a Meade ETX LS-8 Telescope. Is it possible to fit this to it? If so, how does it fit?

    Answer rated: 1
    Unfortunately we do not know the Meade telescopes finderscope holder. But if its a standard one similar to Celestron, one of the SkySurfers bases will fit. You can see here in the manual the scope of delivery https://www.baader-planetarium.com/en/downloads/dl/file/id/1487/product/1748/manual_for_the_baader_skysurfer_iii.pdf
    Answer by: Baader Web Team (Admin) on Jul 30, 2021 10:46:00 AM
  55. Rated: -3
    7/26/2021 9:26 PM Baader C-Mount T-2 with integrated 1¼" Filterholder
    Does Baader offer an adapter for connecting this [Baader C-Mount T-2 with integrated 1¼" Filterholder] directly onto Baader 2" Universal flange # 2958240? (Please note the 2" (50,8mm) inner thread on the 2" Universal flange.)
    I appreciate any help with solving this connection, I searched your website but was unsuccessful finding one. Thank you!

    Answer rated: 1
    You can attach the female T-2 thread of the C-Mount Adapter to the female 2" SC thread of the 2" Universal flange with our 2" / T-2 (male) Adapter #1508035
    https://www.baader-planetarium.com/en/accessories/adapters-imaging-accessories/2-inch-sc-thread/baader-adapter-2%22-(male)--t-2-(male).html
    Answer by: Baader Web Team (Admin) on Jul 27, 2021 9:22:00 AM
  56. Rated: -1
    7/21/2021 11:40 PM Baader 2" ClickLock eyepiece clamps (from T-2 to 4,1")
    I would like to purchase a Click Lock Adapter to replace an Explore Scientific M48x0.75 Adapter for FFFR (SKU M48-0750.7x). Where should i order from if you have the correct adapter?

    Answer rated: 6
    We do have Baader 2" ClickLock M48i clamp (2" filter/photo thread) #2956248 with a female M48-thread.
    If you are in the USA, please contact alpineastro.com, our distributor for the USA. You can also use our dealer locator at https://www.baader-planetarium.com/en/storelocator
    Answer by: Baader Web Team (Admin) on Jul 22, 2021 10:50:00 AM
  57. Rated: -1
    7/21/2021 7:49 AM Baader M68 Tele-Compendium
    Do I need an adapter to attach this to the Baader Steeltrack RT focuser?

    Answer rated: -2
    Yes, you will need our Diamond Steeltrack M68 Adapter (#2957206):
    https://www.baader-planetarium.com/en/diamond-steeltrack-m68-adapter.html
    Answer by: Baader Web Team (Admin) on Jul 21, 2021 10:03:00 AM
  58. Rated: -1
    7/19/2021 8:44 PM Baader K-Line Filter 1¼" (double stacked)
    Can this filter be used with the Baader Herschel Wedge - instead of the solar continuum filter - screwed onto a camera nosepiece?

    Answer rated: -1
    Please note that the K-Line-filter is only intended for photography, not for visual use, as the K-line is well in the UV.

    You can't combine K-Line and Solar continuum, as one filter only lets green light pass, and the other one only deepest blue.

    You can replace the Solar Continuum with the K-Line-filter, but the image will probably still be too dark - and it will almost certainly be much too bright if you remove the ND3-filter, too. This depends on the sensitivity of your camera and on the f/ratio of the telescope, so we can't say which filter will be the right one.

    The photographic version of the Herschel wedge contains three 2" ND-filters. If you do not have the photo-version of the Herschel, you can also buy them seperately at
    https://www.baader-planetarium.com/en/filters/polarizer-neutral-density/baader-neutral-density-filter-(nd-1.8-t1.5).html
    As the K-Line-filter is only 1.25", you can also buy only the 1,25"-filters for photography.

    You may need more than one filter, if you use e.g. a Barlow lens for higher magnifications - then you need a stronger filter like ND1.8 for lower magnifications and e.g. ND0.9 or even N.0.6 for those times when the seeing permits highest magnifications.
    Answer by: Baader Web Team (Admin) on Jul 20, 2021 3:07:00 PM
  59. Rated: 0
    7/19/2021 8:12 AM Optical Wonder™ Set (Cleaning Fluid and Cloth)
    Am I able to get this product in the US?

    Answer rated: 0
    Unfortunately, exporting it to the USA commercially is almost impossible. We'd recommend to contact our distributor in the US, www.alpineastro.com, for cleaning fluids available in the USA.
    Answer by: Baader Web Team (Admin) on Jul 20, 2021 3:22:00 PM
  60. Rated: 0
    7/18/2021 4:26 AM Baader M68 Tele-Compendium
    For connection between Telecompendium and SolarSpectrum ASO with 2" Universal flange #2958240, which adapter is used?
    Thank you!

    Answer rated: -2
    Simply a 2" nosepiese because the M68 compendium has a 2" clamp https://www.baader-planetarium.com/en/baader-2%22-nosepiece-to-t-2--m48-(t-2-part-16).html
    Answer by: Baader Web Team (Admin) on Jul 19, 2021 10:48:00 AM
  61. Rated: 7
    7/17/2021 10:00 PM Baader 2" ClickLock eyepiece clamps (from T-2 to 4,1")
    I've recently purchased a new ClickLock 2 inches clamp (part num. 2956254) to upgrade my new Skywatcher Quattro 8P's focuser.

    Much to my surprise, I found that the ClickLock is unable to lock the Skywatcher original coma corrector: even if the ClickLock is completely closed, the coma corrector still slips free in the focuser tube.

    The same issue appears with the SharpStar 1X coma corrector.

    Were you aware of this issue?

    Thiis problem could be easily solved if the ClickLock was able to reach a slighly smaller diameter at its maximum closing position.

    Is there anything I can do to solve this problem, other than return the ClickLock a use the original focuser adapter? I really love the ClickLock

    Answer rated: -6
    The Clicklock clamp is designed exactly to fit for the 2" standard and fits all eyepieces and accessories we and many customers tested. We can only conclude Its not a problem of the clamp, its a problem of accessories not manufactured accurately enough according to standards, sorry to say.
    Answer by: Baader Web Team (Admin) on Jul 19, 2021 10:51:00 AM
  62. Rated: -1
    7/16/2021 6:31 AM Baader Wide-T-Ring Nikon Z (for Nikon Z bajonet) with D52i to T-2 and S52
    Hi, I have a Nikon Z6 and want to connect it to a Celestron Astro F16 telescope. can you please advise what connectors / adaptors I will need to do this? One would be the T ring D52, but is there another item required? Thank you

    Answer rated: -1
    Just to make sure, you are talking about the 6" Schmidt-Cassegrain telescope? Then, you need in addition to the Nikon Z T-ring an adapter for the telescope's SC-thread - either Baader SC / HD Ultra Short T-Adaptor, 7mm optical length # 2958500B or Celestrons T-adapter for Schmidt-Cassegrain-telescopes #93633-A.
    But please note that the Astro Fi series was not designed for astrophotography, so that the mount does not support long exposure times. However, shooting the moon should work. Also, there may be vignetting on larger camera sensors as the baffle inside of the telescope was designed for eyepieces, so some image processing may be necessary.
    Answer by: Baader Web Team (Admin) on Jul 16, 2021 9:27:00 AM
  63. Rated: 0
    7/15/2021 1:04 PM Baader Neutral Density Filter (ND 0,6 / 0,9 / 1,8 / 3,0)
    Good morning. Is it possible to use these neutral density filters safely (I mean safely for the filter itself) if I mount them AFTER a 110mm Baader D-ERF and BEFORE the Baader telecentric TZ-3 and following etalon filter, in order to adjust the image glare at the focal point? Thank you very much. Sandro

    Answer rated: 1
    We cannot recommend to mount the filter this way. Even if the DERF will cut most of the energy, the filter may get warm enough to burst after a while because the glass expands in the filter cell
    Answer by: Baader Web Team (Admin) on Jul 15, 2021 3:49:00 PM
  64. Rated: 2
    7/12/2021 1:27 PM Baader 3.5 / 4nm Ultra-Narrowband Filter-Set – CMOS-optimized (H-alpha / O-III / S-II)
    What are the advantages and disadvantages of ultra-narrowband filters (3.5 / 4nm) compared to 6.5nm narrowband filters?
    DSO photography from the skies Bortle 7 with refractor f7.5 and Newton f4.8

    Answer rated: 0
    You will see more contrast in the images because more of the unwanted light (straylight, out of band light) gets blocked. This way you can imagine even fainter nebulae and structure, like described here: https://www.baader-planetarium.com/en/downloads/dl/file/id/1712/product/0/baader_ultra_highspeed_f_2_filter_andreas_bringmann.pdf
    Answer by: Baader Web Team (Admin) on Jul 12, 2021 4:35:00 PM
  65. Rated: -4
    7/9/2021 5:31 PM Baader Tripod Adapter Flange for NexStar SE / EVO
    Will this allow me to use my Nexstar Tripod as a Photo Mount?can i attach 3/8 mounts to this?

    Answer rated: 2
    No - it works the other way round and lets you use the NexStar SE mount on sturdier tripods like the Baader T-Pod Aluminium tripod, Baader Hardwood Tripods and many Vixen-, Bresser- or Sky-Watcher tripods. You can even mount the telescope onto a pillar (with Baader Short-Pillar III and Universal Flange-Bass).

    We do not have an adapter to fit Celestron's NexStar-SE-tripod with a 3/8 threaded screw.
    Answer by: Baader Web Team (Admin) on Jul 12, 2021 7:51:00 AM
  66. Rated: -2
    7/8/2021 12:20 PM Baader 3.5 / 4nm f/2 Ultra-Highspeed Filter-Set – CMOS-optimized (H-alpha / O-III / S-II)
    Are there downsides when using the 'ultra fast' filters with 'slower' sytems. For example if I were to use the ultra fast filters on an f7 system would there be any negative effects? (I have both fast and slow systems and was planning on buying the ultra fast set but only if I can also use them with the slower setups)

    Answer rated: 0
    When using Highspeed filters with slower telescopes you will experience that the contrast degrades to the edge of the field. The longer the focal lenght the more dramatic is the effect. f/7 telescopes and Highspeed filters are absolutely non compatible, you will have a satisfying contrast only in the center of the image. For f/7 you need to buy the normal narrowband filters.
    Answer by: Baader Web Team (Admin) on Jul 8, 2021 12:40:00 PM
  67. Rated: 0
    7/7/2021 6:04 PM Baader 3.5 / 4nm Ultra-Narrowband Filter-Set – CMOS-optimized (H-alpha / O-III / S-II)
    I'm thinking about adding an f/3.3 Epsilon to my stable of telescopes (I also use an f/4 and f/6 telescope). These are rated down f/3.5. I don't know that I could justify buying two sets of narrowband filters. How much would the f/0.2 difference really make? Could these still be used with good effect?

    Answer rated: -5
    The "normal" filters will work but you may experience a slight contrast loss at the edges of the sensors field.
    Answer by: Baader Web Team (Admin) on Jul 8, 2021 8:57:00 AM
  68. Rated: -6
    7/3/2021 9:30 PM Fluorite Flatfield Converter (FFC) / 3x-8x
    Could be used with RASA 8"?

    Answer rated: 3
    Unfortunately there is not enough backfocus on the RASA to make this work. The RASA is designed for f/2 and we have not yet heard about successful experiments with barlow lenses a.s.o.
    Answer by: Baader Web Team (Admin) on Jul 5, 2021 9:11:00 AM
  69. Rated: -2
    7/3/2021 8:28 AM StarAid Revolution Standalone Autoguiding - Revision A
    Is the Staraid Unit compatibel mit iOptron CEM 25 Montierung ?

    Answer rated: 3
    Wir haben es zwar selbst noch nicht ausprobiert aber wenn die Montierung einen normalen Autoguider Eingang hat sollte es lt. Hersteller funktionieren
    Answer by: Baader Web Team (Admin) on Jul 5, 2021 8:14:00 AM
  70. Rated: 1
    6/26/2021 11:19 PM 12,5 mm Morpheus® 76° widefield eyepiece
    What is the best Barlow lens to use with Morpheus eyepieces?

    Answer rated: 8
    You can use any high-quality Barlow wih the Morpheus eyepieces. The best one would be our Carl Zeiss 1¼" Abbe Barlow lens 2x # 1603321 which is surpassed in its quality only by the Fluorite Flatfield Converter (FFC) / 3x-8x # 2458200 - but for visual use, a magnification of 3x or more is usually too much, so the 2x Barlow would usually be the better choice.
    Answer by: Baader Web Team (Admin) on Jun 28, 2021 12:06:00 PM
  71. Rated: 2
    6/26/2021 7:41 PM Baader D-ERF Energy Rejection Filter (75 - 180mm)
    What is the irradiance damage threshold for the solar spectrum at sea level irradiance of your filters? 2x, 3x, 4x? Likewise, what are the temperature ranges for performance and survival?

    Answer rated: 2
    We are sorry, but we do not have answers for this.
    Working temperatures are from 0°C to 35°C (below 0°C the filter housing must receive an outer insulation to go on band).
    Storage should be at regular room temperature. Protect the SolarSpectrum filters from temperatures below zero.
    Answer by: Baader Web Team (Admin) on Jun 28, 2021 11:47:00 AM
  72. Rated: 0
    6/23/2021 10:36 PM Glasspathcorrector 1:1,25 for Baader-Binoviewer with T-2 thread (MaxBright® II and MaxBright®)
    I would like to know the magnification at backfocus distances for the 1.25x, 1.7x and 2.6x GPCs. Even better would be graphs of each showing magnification for each at various backfocus distances or a formula for each GPC.

    Answer rated: -4
    The magnification is depending on the focal lenght of your telescope and the eyepieces that you are using.
    If you have a telescope with 1000mm focal length and use a 20mm eyepiece, the magnification is 1000:20 = 50x
    When using an Glaspath corrector 1,25 the magnification is 1,25x 50 = 62,5x
    Answer by: Baader Web Team (Admin) on Jun 24, 2021 8:25:00 AM
  73. Rated: 0
    6/23/2021 8:44 PM Baader 2" ClickLock eyepiece clamps (from T-2 to 4,1")
    I have a question about the Baader click lock. I own a Feather Touch focuser which has two tension screws and two brass pressing rings on the inside. Normally I put a 2 inch flattener directly into the focuser. Unfortunately this isn't a threaded connection, but I can't help that. Now here's the problem: my images seem to suffer from tilt, probably since there is too much wiggle between the focuser and the flattener. A friend advised me to look into the Baader click lock which may solve the tilt problem. My question is whether or not that could be a true statement and secondly how the click lock should be attached to my focuser. Maybe I need an extra adapter with it?

    Answer rated: 4
    Unfortunately we cannot tell you if the ClickLock will solve the tilt problem because we do not know your flattener. We have several ClickLock versions for several Feather Touch models, you will need to check wich thread your focuser has: #2956263 M63a x 1-ClickLock (for Feathertouch 2.5"), #2956275 M75a x 1-ClickLock (for Feathertouch 3.0"), #2956241 4,1"i UNF/24G-ClickLock (Feathertouch / TEC)
    Answer by: Baader Web Team (Admin) on Jun 30, 2021 9:34:00 AM
  74. Rated: 6
    6/23/2021 4:04 PM Alan Gee Telecompressor Mark II (T-2 part #20)
    what year of production?

    Answer rated: 1
    The optical design of the Alan Gee goes back to the 1990s. But the actual products which we ship are freshly assembled every approximately two months, so they are new.
    Answer by: Baader Web Team (Admin) on Jun 25, 2021 12:08:00 PM
  75. Rated: 4
    6/21/2021 9:07 PM Baader K-Line Filter 1¼" (double stacked)
    Can i use this filter with my Baader Herschell Helioscope ?

    Answer rated: 1
    Yes - but only for photography! The K-Line filter is NOT FOR VISUAL USE!
    Answer by: Baader Web Team (Admin) on Jun 22, 2021 9:02:00 AM
  76. Rated: 1
    6/21/2021 4:58 PM Baader 3.5 / 4nm Ultra-Narrowband Filter-Set – CMOS-optimized (H-alpha / O-III / S-II)
    Hello, I have a couple of questions:
    1) Will you take orders for the 65mm square versions as soon as orders open ?
    2) Is there a new LRGB set that has Life-Coat and is CMOS optimised ? What is the link if so ?
    I am very excited about your new filters !

    Answer rated: 2
    Thank you for your nice comment, we are excited too! As soon as narrowband deliveries start, the 65x65x3 mm filters all will be available in all four filter families. At this time we are concentrating entirely on production and marketing of the new narrowband technology - also due to the fact that RGB-filters have a much wider spectral window and imaging results do not suffer so badly when comparing the s/n ratio of CCD-chips versus CMOS-chips.

    Eventually we will bring the new coating tech into the field of RGB-filters - but please understand that this still will take considerable time. The financial burden to enter into new technological fields are big. At this time we are concentrating entirely, to show that this new CMOS-optimized coating tech is really as good as our early testers confirmed.

    As soon as more people know about this and can confirm it with their imaging results, we hope this will pave the way to extend this tech into other fields. However - far more important than the RGB-filters are both families of photometric filters (SLOAN & UBVIR) which are in demand at this time - to be produced in the same quality grade and "to be available at all". We are working on this very hard and once the community can access SLOAN (u,g,r, i,z-s,y) filters at "down to earth prices" this will also open the field for totally new ways of "RGB-like" imaging, for new optics to work in NIR asf.
    Answer by: Baader Web Team (Admin) on Jun 22, 2021 9:03:00 AM
  77. Rated: 0
    6/17/2021 7:40 PM Baader Sky-Surfer III red dot finder
    I wish to mount my Skysurfer III on a Meade 6" Maksutov OTA in place of the regular Meade finder scope. None of the supplied brackets will fit. Specifically, the "standard finder scope" bracket is too wide for the Meade fitting. Do you have a bracket I can use?
    (BTW the 6" LX85 Mak does not have other mounting points on the rear OTA rim).

    Answer rated: -1
    If none of the brackets fits, you can always replace the finder base on the telescope with Baader Standard Base - for MQR III&IV, for Witty One & for V-Bracket # 2457000. You can probably also replace it with Sky-Surfer III – tube adapter set made of ABS # 2957303 which is already included with the SkySurfer III.
    Answer by: Baader Web Team (Admin) on Jun 18, 2021 11:17:00 AM
  78. Rated: -3
    6/16/2021 10:53 AM Baader Heavy Duty M48 Quick Changing System
    I have your M48 quick changer system. Works great, but no way of protecting equipment from dust.(I also have your T2 system with moulded dust caps). Please help with this - the use of this is rather spoiled by not being able to protect the optics, and of course even old filters wont work!. Thanks Peter

    Answer rated: 0
    Hello. Checking on availability of dustcaps for your M48 system. Still needed!
    Answer by: Dr. Peter Houtman on Sep 30, 2021 3:16:49 PM
    Answer rated: 0
    Unfortunately it is correct that we have not yet produced dustcaps for our new M48 systems. But we see the need for them and plan to include them in the future. It will take a couple of months however to produce them from scratch. Sorry about the inconvenience!
    Answer by: Baader Web Team (Admin) on Jun 17, 2021 2:14:00 PM
  79. Rated: 4
    6/15/2021 9:27 PM Alan Gee Telecompressor Mark II (T-2 part #20)
    Tell me, what is the diameter of the pipe?

    Answer rated: 1
    The diameter is 37,4mm and the length over all is 71,4mm. Diameter of the collar is 41mm at a hight of 1,6mm.
    Answer by: Baader Web Team (Admin) on Jun 16, 2021 8:33:00 AM
  80. Rated: 3
    6/13/2021 7:52 PM 2" BDS-SC Baader Diamond Steeltrack® Focuser
    Hay espacio suficiente entre Telescopio y Horquilla para sustituir el microenfocador de Meade en un LX600 de 14" por 2" BDS-SC Baader Diamond Steeltrack Focuser?

    Answer rated: 2
    We do not know the Meade dimensions, but the minimum height of the SteelTrack SC as supplied (incl. 2" clamp) is 93 mm.
    The minimum height with optional S58 direct-thread adapters is 80 mm.
    You can find the dimensions in this PDF: https://www.baader-planetarium.com/en/downloads/dl/file/id/29/product/2856/bds_sc_dimensions_technical_drawing.pdf
    Answer by: Baader Web Team (Admin) on Jun 14, 2021 11:54:00 AM
  81. Rated: -2
    6/9/2021 2:33 PM Alan Gee Telecompressor Mark II (T-2 part #20)
    Hello! Does he correct coma?
    If you screw it to a diagonal mirror, will it cover the entire APS-C matrix?
    I have a Meade 8 "lx90 telescope. Thank you.

    Answer rated: -4
    Unfortunately this will not work. The Alan Gee is not correcting the Coma of your telescope and will not cover the entire APS-C matrix when screwed into the diagonal
    Answer by: Baader Web Team (Admin) on Jun 9, 2021 3:47:00 PM
  82. Rated: -1
    6/4/2021 2:02 AM Baader Wide-T-Ring Nikon Z (for Nikon Z bajonet) with D52i to T-2 and S52
    I would be thankful for some help in choosing parts to attached my Nikon Z7 camera to an old Celestron Ultima 11 telescope equipped with a Celestron off-axis guider. Starting from the camera (flange distance 16mm) I' believe I would need a Baader t-ring adapter #2408335 (8.3 mm) and a M48 adapter #2958552. I would screw this directly to the Celestron M48 adapter which comes with the OAG (12.5 mm). Next would come the OAG itself (29 mm).

    I have already ordered the Baader Click-lock adapter #2956233 to replace my existing visual back (53 mm). If my math is correct, this adds up to 118.8 mm. My original Celestron Manual states that the back focus distance at f/10 from the primary mirror baffle tube is 151.765 mm. This means I need to provide additional spacing of 32.965 mm that I am not sure how to get. Would I want to add this before the OAG rather than after the OAG in order to keep the distance from my OAG prism to the camera sensor at a minimum?



    Answer rated: 0
    An extender 32mm long with 2" thread whould be helpful, unfortunately we don´t have such. Instead you could use a #2956220 ClickLock
    screwed directly onto the OTA:
    https://www.baader-planetarium.com/en/baader-2%22-clicklock-eyepiece-clamps.html
    https://assets.baader-planetarium.com/media/extendware/ewimageopt/media/inline/72/3/baader-2-clicklock-eyepiece-clamps-from-t-2-to-41-2df.jpg
    It is slightly too long, 47mm minus the 7mm thread from OTA, but a f/10 ratio optic like a SCT is tolerating it.
    https://www.baader-planetarium.com/en/baader-2%22-safety-kerf-nosepiece-with-2%22-filter-thread.html
    Now you can put on your set-up as usual and the camera and guiding camera are staying common.
    Answer by: Baader Web Team (Admin) on Jun 4, 2021 12:49:00 PM
    Answer rated: 0
    Thank you very much for the help
    Answer by: Dr. Robert Nick on Jun 4, 2021 4:12:26 PM
  83. Rated: -6
    6/3/2021 10:11 PM Baader UFC (Universal Filter Changer)
    I have a Celestron Nextstar Evolution 9.25" SCT with the Celestron 2" Dielectric Star Diagonal (Celestron #93573). The star diagonal has an adapter allowing it to thread directly onto the back of the telescope.

    I'd like to thread the Baader Universal Filter Changer (UFC) to the back of my telescope, then thread the star diagonal to the UFC. In the UFC I'd like to use both 1.25" and 2" filters. Could you please provide the required part numbers for this configuration? Also, anything else I should consider or be aware of?

    Answer rated: -3
    There are at least two ways to realize it.

    First you can screw on the OTA a #2956220 SC ClickLock
    https://www.baader-planetarium.com/en/baader-2%22-clicklock-eyepiece-clamps.html
    Then as an unit following parts (in the row from OTA to the diagonal):
    https://www.baader-planetarium.com/en/baader-2%22-safety-kerf-nosepiece-with-2%22-filter-thread.html
    https://www.baader-planetarium.com/en/baader-ufc-s70--2%22-adapter-2%22-sc-thread-(f)-telescope-sided.html
    https://www.baader-planetarium.com/en/baader-ufc-base-(filter-chamber)-telescope-sided-s70-dovetail-receptor.html
    https://www.baader-planetarium.com/en/baader-ufc-2%22-sc-adapter-2%22-(m)-camera-sided.html
    Optionally a second CLickLock 2956220 when using the diagonal with the 2" barrel.
    Now you can put on and off the UFC in one piece to be more flexible.

    Second way:
    https://www.baader-planetarium.com/en/baader-2%22-nexstar-locking-ring..html
    https://www.baader-planetarium.com/en/baader-ufc-s70--2%22-adapter-2%22-sc-thread-(f)-telescope-sided.html
    https://www.baader-planetarium.com/en/baader-ufc-base-(filter-chamber)-telescope-sided-s70-dovetail-receptor.html
    https://www.baader-planetarium.com/en/baader-ufc-2%22-sc-adapter-2%22-(m)-camera-sided.html
    The NexStar Locking ring is neccessary otherwise the 2" SC thread from OTA is intrusing too deep into the UFC base

    Filter slider for 2" filters:
    https://www.baader-planetarium.com/en/baader-ufc-2%22-(m48)-filter-slider.html
    And for the 1,25er :
    https://www.baader-planetarium.com/en/baader-ufc-d-50.4-filter-slider.html
    https://www.baader-planetarium.com/en/baader-ufc-1%C2%BC%22-aux-filter-holder-(requires-2459113).html

    I´d say to stay with 2" filters because you can use the diagonals 2"/1,25" reducer so you´re able using 2" filters
    with 1,25" eye pieces. For some reason lots of customers regret to buy 1,25" filters and wanting it later in 2".
    Answer by: Baader Web Team (Admin) on Jun 4, 2021 11:55:00 AM
  84. Rated: 1
    6/3/2021 11:33 AM Baader K-Line Filter 1¼" (double stacked)
    Why are there no Baader K-Line 2 "(double stacked) filters?

    Answer rated: 0
    1. because the price would become prohibitive - in the range of €1000.-
    2. because the filter cell would need to be ~ 12 mm high - a killer criterium for most users as there is not enough space in the optical train.
    3. since lucky imaging cameras have small chips - not needing larger filterrs than 1 1/4"
    4. BECAUSE WE ÀBSOLUTELY DO NOT WANT TO SUPPORT LOOKING AT THE SUN IN UV-LIGHT !!!
    Answer by: Baader Web Team (Admin) on Jun 4, 2021 1:27:00 PM
  85. Rated: 4
    6/3/2021 11:12 AM 2" MPCC Mark III (Multi-Purpose Coma Corrector for Newtons)
    On the image, I have a high circular reflection caused by the filter with the following setup:

    Telescope: Newton 1000/200 F5
    Camera: QHY294C
    QHYCCD filter wheel CFW3M 5x50,8mm with:
    Baader Narrowband CCD Filters 2" mounted OIII 8.5nm, SII 8nm, H-alpha 7nm
    2" MPCC Mark III (back focus OK)

    The reflection does not disappear when using flats.
    Do you have any suggestions?

    Thank you

    Answer rated: 4
    Please take a look at this PDF
    https://www.baader-planetarium.com/en/downloads/dl/file/id/287/product/4184/faq_problems_with_filters_can_have_the_strangest_causes.pdf
    and this blog post
    https://www.baader-planetarium.com/en/blog/halos-viewed-without-prejudice/
    where we have collected a couple of information about filters and halos.
    Answer by: Baader Web Team (Admin) on Jun 4, 2021 1:14:00 PM
  86. Rated: 2
    5/31/2021 3:00 AM Baader TQC/TCR Heavy duty T-2 Quick Changing System (T-2 part #06A & #07)
    Is this set the best fitting to be used between Maxbright 2 and T2-90° Prism (#2456095)?
    I see dust cap for quick changer but what about dust cap dovetail ring side?

    Answer rated: -2
    Yes, this is a perfect fit. And we also have the dovetail ring cap but this is not in the scope of delivery, can be ordered separately https://www.baader-planetarium.com/de/t-2-staubdeckel-ringschwalbe-zeiss-mikro-bajonett.html
    Answer by: Baader Web Team (Admin) on May 31, 2021 8:54:00 AM
  87. Rated: -2
    5/30/2021 4:43 PM 2" BDS-NT Baader Diamond Steeltrack® Focuser
    Hi, can this focuser be installed on a Orion Vx6? (150 mm newtonian)

    Answer rated: 5
    Yes, this will work, but you need to drill some new holes in the OTA. You find the measurements a.s.o. in the manual https://www.baader-planetarium.com/en/downloads/dl/file/id/175/product/2859/instruction_manual_for_all_baader_diamond_steeltrack_bds.pdf
    Answer by: Baader Web Team (Admin) on May 31, 2021 8:49:00 AM
  88. Rated: 1
    5/30/2021 4:23 AM Baader M68 Tele-Compendium
    For SolarSpectrum ASO with binoviewer use, do you recommend Telecompendium instead of T2 connection?
    Also, which part does the TZ-4 connect to inside the Telecompendium, is it T-2 Part #16? Thank you!

    Answer rated: 5
    The Telecompendium is much more stable therefore we recommend for such a big and heavy filter, especially in combination with a big camera, the Telecompendium. Yes, its part #16 that connects to the TZ inside
    Answer by: Baader Web Team (Admin) on May 31, 2021 8:46:00 AM
  89. Rated: 3
    5/29/2021 8:07 PM 2" BDS-RT Baader Diamond Steeltrack Focuser
    Solar telescope Lunt 60 use a dovetail clamp of 78mm for the focuser.
    is it possible to attach a 2" BDS focuser to this telescope?

    Answer rated: 12
    and if we try to adapt the BDS-NT? I saw some people using the old NT model directly but the new one has a bigger diameter..
    Answer by: Jose Carballada on May 31, 2021 10:17:54 AM
    Answer rated: 0
    Unfortunately this will not work as the backfocus of this instrument is not sufficient
    Answer by: Baader Web Team (Admin) on May 31, 2021 8:42:00 AM
  90. Rated: 1
    5/24/2021 2:33 PM VIP 2x modular barlow lens, visual and photographic
    Hi: I purchased an Explore Scientific 82° 30 mm Eyepiece and am looking for a good Barlow. After doing a lot of research I discovered the VIP. I love how versatile it is! However, this eyepiece is a 2” behemoth (weighs a kilo), so I was wondering if the VIP is a good choice for this application? Thanks!

    Answer rated: -2
    Unfortunately the VIP is not suitable for this eyepiece, we recommend to buy an 2" AstroPhysics convertible Barlow instead
    Answer by: Baader Web Team (Admin) on May 26, 2021 9:32:00 AM
  91. Rated: 0
    5/23/2021 1:28 PM Baader 2" ClickLock eyepiece clamps (from T-2 to 4,1")
    Can I temporarily remove the silver knurled lever from the clamp wheel of my #2956220 ClickLock? Is it possible or even advisable?
    (Further detail: The lever hits my Celestron Focus Motor. So I have to remove the Focus Motor before I can install or remove the ClickLock. If I could temporarily remove the lever, I could fully rotate the ClampLock with the focus motor in place.)

    Answer rated: 1
    Unfortunately the removal of the lever is not provided for by design, it is glued in place and even if it were removed, the ratchet function still remains.
    You could "unscrew" the lever by force, but we don't recommend it.

    However, you can turn the whole head part of most ClickLock clamps - like the SC-clamp 2956220 - together with the lever into a comfortable position so that it does not interfere - see below linked PDF instructions.

    https://www.baader-planetarium.com/en/downloads/dl/file/id/1559/product/3030/adjusting_the_clicklockr_lever.pdf
    Answer by: Baader Web Team (Admin) on May 25, 2021 10:00:00 AM
  92. Rated: 1
    5/21/2021 6:59 PM Baader Hyperion Universal Zoom Mark IV, 8-24mm eyepiece (1¼" / 2")
    I have just received this item. I can’t identify how to find the M43 photo thread. The manual says “when you remove the extendable eyecup..” But how do you remove the eyepiece?

    Answer rated: 6
    This is mentioned on page 6 of the manual. You simply screw the eyecup up to the uppermost position, where there is a small stop. Then, you screw it a little bit more - this is only a stop, so when you screw forther, you remuve the eye cup and can access the M43-thread.
    Answer by: Baader Web Team (Admin) on May 26, 2021 11:08:00 AM
  93. Rated: 4
    5/21/2021 4:08 PM Baader K-Line Filter 1¼" (double stacked)
    Can this filter be used for photography with a glass white light solar filter instead of the included film?

    Answer rated: -4
    If its an approved withe light solar filter it will work but please note depending on the neutral density of this filter the image may be quite dark
    Answer by: Baader Web Team (Admin) on May 21, 2021 4:53:00 PM
  94. Rated: 2
    5/19/2021 3:07 PM Baader Hyperion Universal Zoom Mark IV, 8-24mm eyepiece (1¼" / 2")
    I have a 750 mm F/5 Newtonian, and I have bee told this eyepiece will not work with such a "fast" telescope as the edges of the image will be very blurred. Is this true?

    Answer rated: 0
    The eyepiece will work with your telescope, especially when using it with the shorter focal lenght for higher magnificaton. When you use it with 24mm you will see the "coma" that is normal for f/5 Newton systems. This is not a problem of the eyepiece - its a problem of the telescope. You can get rid of coma for photographical purposes with our MPCC Coma Corrector https://www.baader-planetarium.com/en/2%22-mpcc-mark-iii-(multi-purpose-coma-corrector-for-newtons).html but it may be hard to attach it and still come in focus with an 750mm/f5, there may be not enough backfocus
    Answer by: Baader Web Team (Admin) on May 19, 2021 3:13:00 PM
  95. Rated: 1
    5/18/2021 6:50 PM Bundle: AstroSolar Safety Film and Solar Viewers
    Hola
    ¿Las laminas de filtro AstroSolar caducan?

    Answer rated: 4
    Los filtros astrosolares siguen siendo utilizables después de muchos años, si el filtro no tiene agujeros u otros lugares donde falte el recubrimiento. Por favor, sostenga el filtro frente a una lámpara brillante, si usted ve un cielo estrellado en los pequeños agujeros o lugares más brillantes, entonces la película debe ser reemplazada.
    Answer by: Baader Web Team (Admin) on May 19, 2021 8:16:00 AM
  96. Rated: 1
    5/18/2021 6:22 PM Baader UBVRI Photometric Johnson/Bessel R-Filter (4mm Glass)
    What kind of glass is this filter made of? It is very important for us to know the exact refractive index.

    Answer rated: -1
    Classical Bessel filters consist of at least three different color glasses - each having different index. We stopped doing these 4 mm thick old style glasses and will bring a modern dielectric UBVIR-set (but with the ORIGINAL Bessel transmission!) in autumn - featuring the 2mm or 3 mm thickness of standard astro-filters - in order to avoid refocusing when switching between different filters. At the time of the release we will publish lin/log spectral traces and full data on the product page.
    Answer by: Baader Web Team (Admin) on May 19, 2021 8:27:00 AM
  97. Rated: -3
    5/16/2021 4:45 PM Solar Spectrum Advanced Observer (32mm clear aperture)
    Configuration Lunette astro physics 140 - télécentrique Baader TZ3- solar spectrum advenced 32 mm- Camera cmos ATIK horizon 17,64mm x 13,32mm pixels 3.8 x 3.8
    Qu'elle est la distance entre l'arrière du filtre et le capteur cmos?

    Answer rated: 5
    Le capteur doit se trouver à 250 mm derrière la lentille arrière du système télécentrique. Entre les deux, il doit y avoir le filtre Halpha. Plus de détails ici https://www.baader-planetarium.com/en/downloads/dl/file/id/129/product/3123/baader_telecentric_systems_tzs_for_h_solar_filters.pdf
    Answer by: Baader Web Team (Admin) on May 17, 2021 10:03:00 AM
  98. Rated: 0
    5/16/2021 2:57 PM Baader Heavy Pillar (BHP) modal steel pillar, payload capacity upto 600kg, custom made
    To check if this pier is suitable for my concrete pad, what is the diameter of the four drilled holes at the bottom plate and the distance between (center to center) of drilling holes (I guess these are equal squared)?

    Answer rated: 0
    Kindly please note that these pillars are "subsidized" in price as they only are internded to be a necessary solution when ordering a mount from Baader Planetarium. We do not offer this pillar as regular product, unless it is being ordered in conjunction with a 10 Micron or Planewave-mount.
    Answer by: Baader Web Team (Admin) on May 17, 2021 9:36:00 AM
  99. Rated: 7
    5/16/2021 1:03 PM Baader Hyperion Universal Zoom Mark IV, 8-24mm eyepiece (1¼" / 2")
    I want to atach Hyperion mark iv zoom with 2,25 zoom to my Sony a5000 mirrorless E-Mount, please advise me regarding the built (adaptors, t rings, spacers ) in order to obtain best results combined with skywatcher 127mak.

    Answer rated: 3
    Please take alook at page 4 of our Digiscoping-PDF at https://www.baader-planetarium.com/en/downloads/dl/file/id/444/product/3117/digiscoping_camera_adaptations_for_afocal_photography_and_eyepiece_projection.pdf

    You need
    Hyperion / Morpheus® T-Adapter M43i/T-2a (M42x0.75) # 2958080
    Baader Wide-T-Ring Sony E/NEX Bayonet with D52i/M48 to T-2 und S52 # 2408317
    and several T-2-extensions to achieve the necessary distance between camera sensor and bac of the eyepiece, depending on sensor size and desired magnification.

    For an APS-C-camera like the A5000, the distance should be at least 85mm, where a regular DSLR with T-ring is 55mm deep (that's the flange focal distance or backfocus of camera plus standard T-ring) - so you'ld need a 30mm extension.
    The Sony E-bayonet with our Wide T-ring has got a flange focal distance of 26mm, so you should use about 60mm extensions, e.g. by combining
    Baader T-2 / 40 mm Extension Tube (T-2 part #25B) # 1508153
    Baader T-2 / 15 mm Extension Tube (T-2 part #25A) # 1508154
    Baader T-2 / 7.5 mm Extension Tube (T-2 part #25C) # 1508155
    A larger distance will give you a higher magnification; a shorter distance will decrease the useable image circle, so that there may be distortions in the edges.
    For the resulting effective focal lengths, please see the digiscoping PDF linked above
    Answer by: Baader Web Team (Admin) on May 26, 2021 11:19:00 AM
  100. Rated: 0
    5/16/2021 4:09 AM Fluorite Flatfield Converter (FFC) / 3x-8x
    Following my previous question for solar imaging with FFC behind the Baader Herschel prism, can the FFC be used with any of the ND filters available in the photographic version of the Herschel prism, including the 0.6?
    Also I see that you have a solar photo of photosphere on the leaflet of FFC. That means it can be used for solar imaging despite the "How to use" instructions below?

    Answer rated: -1
    The photo on the leaflet was taken with Baader Astrosolar ND 5 filter foil in front of the telescope. This way no heat enters the telescope. The FFC was mounted straight on the focuser with a solar shade mounted https://www.baader-planetarium.com/en/solar-observation/h-alpha-accessories/solar-shade-with-drilled-hole-t-2.html so that the housing of the FFC was in shadow and did not get exposed to sunlight and couldnt heat up.
    Answer by: Baader Web Team (Admin) on May 17, 2021 9:27:00 AM
  101. Rated: -2
    5/16/2021 4:01 AM Fluorite Flatfield Converter (FFC) / 3x-8x
    On "How to use FFC" it reads: "Do not use it for photographing the sun". If we use FFC for solar imaging after a Baader Herschel Prism, this may still create a problem?

    Answer rated: -5
    After the Herschel wedge it is better - but if the sun shines on the black housing of the FFC it gets also heated up. So there is also a chance for damage of this sensitive optical item.
    Answer by: Baader Web Team (Admin) on May 17, 2021 9:25:00 AM
  102. Rated: -10
    5/13/2021 10:13 PM 2" BDS-RT Baader Diamond Steeltrack Focuser
    I have Baader Steeltrack focusers on all my telescopes with the steeldrive motor and would like to fit the 2" Baader Steeltrack-RT to my Skywatcher Esprit 100ed Pro which currently has the stock 3" rack and pinion focuser, which has an M117x1mm thread on the telescope side. Is there a connection you do to allow this or are you likely to do a 3" version of the Steeltrack-RT i the future that would fit.

    Answer rated: 0
    The best way to connect the focuser is to buy from teleskop-express.de the adapter called TSM117-M90 which reduce the thread from M117x1 to
    M90x1. Now you can use this adapter:
    https://www.baader-planetarium.com/en/rt-adapter-m90x1-diamond-steeltrack-(skywatcher).html?___from_store=de
    At the moment we´re not planing to do a 3" Steeltrack I´m sorry.
    Answer by: Baader Web Team (Admin) on May 19, 2021 9:35:00 AM
  103. Rated: 4
    5/12/2021 4:13 PM Baader C-Mount Nikon F-Mount Adapter
    Do you sell something similar to this but in a bigger size than C Mount?

    Answer rated: -5
    Unfortunately we do only offer the items you find on our website
    Answer by: Baader Web Team (Admin) on May 14, 2021 12:15:00 PM
  104. Rated: 2
    5/12/2021 11:51 AM Baader Solar Continuum Filter (540nm)
    I have bought this filter but not yet tried it. Soon I will do imaging of the sun with my Celestron Neximage 5 + APO 2x Barlow and my OTA, Celestron C8" XLT.
    I have also bought your AstroSolar Safety Film and will use it in front of the C8".
    Is this enough for imaging of the sun or will it be too warm and harm my equipment?
    Friends of mine have said that it is also needed to add an extra IR filter to reduce the heat, but this is something I haven't read from you in Baader. Maybe it's some amateur's ideas without the correct knowledge.
    I have bought many things from you and think you are one of the best optic manufacturers in the world. I really trust your skills and your products.
    So before I start imaging the sun, it's better to ask you for good advice instead of destroying my equipment. :-)
    Regards,
    Bo Sundin aus Schweden

    Answer rated: 1
    Thanks for your kind words. We can confirm that AstroSolar Safety Film (OD 5.0) in FRONT of your optics is suitable of protecting your instruments and eyes. No need for an additional IR-filter. Please also check out www.astrosolar.com for more informational pages as well as FAQs.
    Answer by: Baader Web Team (Admin) on May 12, 2021 12:10:00 PM
  105. Rated: -3
    5/12/2021 11:16 AM Baader U-Venus-Filter (350nm)
    Do you think that Celestron Neximage 5 with 2X APO Barlow and this 1 1/4" filter in an OTA, Celestron C8" XLT will be sensible enough to capture Venus cloud structures?

    Answer rated: 2
    We have not tried this combination but the U filter is very dark wich lead to very long exposure times even with ideal cameras. Furthermore the camera you mention has a colour sensor with bad UV sensitivity. Therefore we doubt that you will create nice images of the Venus clouds with this combination.
    Answer by: Baader Web Team (Admin) on May 14, 2021 12:16:00 PM
  106. Rated: 0
    5/4/2021 5:40 PM Baader Zenith Prism Diagonal T-2/90 ° with 32mm Prism (T-2 part #14)
    Good day ... Is there an date estimate as to when this diagonal will go into production. Thank You

    Answer rated: -2
    Currently some products are out of stock due to COVID delays in manufacturing and supply chains. Unfortunately, we cannot predict delivery times and have many thousands of customers, which we cannot inform individually when a product is available. Therefore we have developed two automatic tools which we would like to ask you to use:
    1st Newsletter:
    If you enter your email address here, you will receive a monthly newsletter with a lot of information about our products and new releases
    https://www.baader-planetarium.com/en/newsletter/
    2nd "Notification Tool"
    On the page of items that are currently not available, there is a field "Notify me when the product is available".
    If you enter your email address there you will be informed as soon as the product is in stock.
    Answer by: Baader Web Team (Admin) on May 5, 2021 2:40:00 PM
  107. Rated: 1
    5/1/2021 7:01 PM 2" BDS-SC Baader Diamond Steeltrack® Focuser
    Am i right in thinking, to rotate the entire focuser housing after installation to align with the OTA, its the 6 black flat head screws that loosen to allow this to be achieved ?

    Answer rated: 5
    Yes, by setting the screws not too tight, you have a slipping clutch. You can also replace one of the screws with a thumb screw (it is a M5 thread, if I remember correctly).
    Answer by: Baader Web Team (Admin) on May 3, 2021 8:23:00 AM
  108. Rated: -1
    5/1/2021 9:53 AM ASBF: AstroSolar Binocular Filter OD 5.0 (50mm - 100mm)
    On my 140mm Newt I have an Astrozap Baader which I love, is this filter made of the same material and density?
    Also, which size should I choose for a Zenithstar 73EDii?

    Thanks in advance
    Adriano

    Answer rated: 5
    Sorry, we don't sell "Astrozap". Do you maybe mean our AstroSolar Safety Film? In that case the answer is yes, thats the same material.
    As for finding the correct Baader Solar Filter: please check out our filter finder tool: https://www.astrosolar.com/baader-solar-filter
    Answer by: Baader Web Team (Admin) on May 11, 2021 11:24:00 AM
  109. Rated: 1
    4/28/2021 11:32 PM Baader L-RGB CCD-Filterset
    2015 or earlier LRGB filters. Do they have the /\ mark?

    I bought some an SBIG filter wheel FW5-8300 that came with 36 mm unmounted LRGB filters in 2015 *used*. The original owner claimed that the filters are Baader filters. No filter cases came with my purchase.

    Recently, I examined the filters and found that
    the L filter had an /\ mark on the edge which is what I believe Baader filters should have. But the RGB filters do not. Question: Do the Baader filters always have had /\ marks on them? If not is there a way to check whether they are Baaders?

    Answer rated: 3
    Only our Narrowband filters have the mark since a few years. The LRGB filters do not need this mark because it doesn´t matter in wich direction the both surfaces get built in the beam
    Answer by: Baader Web Team (Admin) on Apr 30, 2021 11:44:00 AM
  110. Rated: 2
    4/27/2021 1:59 PM Baader Heavy Duty M48 Quick Changing System
    what is the maximum payload in KG (eg. ccd camera + filterwheel) that can be supported by this adapter? thanks

    Answer rated: -1
    I don't know the answer to my own question... but I can tell that I bought it and it's working very well with my QHY268M + QHY filter wheel (5). It's a wonderful little accessory that speeds up the mount/unmount operations. Baader Team: you should also provide 2 plastic caps with it!
    Answer by: Valerio on May 31, 2021 7:48:42 PM
  111. Rated: 2
    4/25/2021 3:09 PM Baader 2" Cool-Ceramic Safety Herschel Prism (Visual / Photographic)
    When inserting a GPC (2.6) into the adapter #27 (for binoviewing w. the Wedge), the GPC touches the ND filter. How can this be avoided? I could attach an empty 2 inch filter cell to gain some depth, but this is not mentioned in the Solar Wedge's manual. Am I doing something wrong?

    Answer rated: 2
    You are not doing something wrong, unfortunately the space is limited in the Herschel Wedge body. If the body would be bigger, the lightpath would be longer and a lot of more telescopes could not reach focus with this item. The idea with the empty filter cell is nice, you should do so
    Answer by: Baader Web Team (Admin) on Apr 28, 2021 8:24:00 AM
  112. Rated: -2
    4/24/2021 10:45 AM Baader Hyperion Universal Zoom Mark IV, 8-24mm eyepiece (1¼" / 2")
    does the Hyperion Mark IV zoom fit an Opticron HR66 spotting scope?

    Answer rated: -3
    We do not know the thread of the Opticron and have no special adaptor. Maybe the KOWA adaptor fits. In the manual you find in detail explanations about the available adaptors https://www.baader-planetarium.com/en/downloads/dl/file/id/356/product/3117/description_and_recommended_accessories_for_the_hyperion_universal_zoom_mark_iv.pdf
    Answer by: Baader Web Team (Admin) on Apr 28, 2021 8:35:00 AM
  113. Rated: 2
    4/24/2021 8:06 AM Baader Sky Surfer V (Night & Day Design) Red-Dot-Finder
    I would like to know the availability of the SkySurfer V
    And if you have the fixing system to make the link with the Televue TV-85 mm clamp

    Answer rated: -3
    If there are screws and holes to install a finderscope on the TV 85 it is possible to install the SkySurfer. Unfortunately we cannot estimate availability, please use the "notify" function on our website to be informed when the product is back in stock.
    Answer by: Baader Web Team (Admin) on Apr 26, 2021 10:06:00 AM
  114. Rated: 0
    4/21/2021 11:02 PM Baader 2" NexStar locking ring.
    The NexStar Locking Ring comes in contact, barely, with the Celestron Focus Motor. I can probably make it work, but is there some other issue with using this Locking Ring on my NexStar Evolution EdgeHD 8in? If the motor housing is touching the Ring, is that a problem? Sorry for the dumb question. Thank you for answering these questions like this, very helpful. Tschüß!

    Answer rated: 4
    If you are able to turn the ring to fasten the mirror then there should not be a problem
    Answer by: Baader Web Team (Admin) on Apr 28, 2021 2:57:00 PM
  115. Rated: -4
    4/18/2021 9:46 AM Baader 1¼" - 31.8mm nosepiece extension with 1¼" filter thread on both sides (T-2 part #05)
    I would like to ask you if the Baader Q Barlow lens element can be screwed directly inside this adapter (if the internal diameter is big enough).

    Answer rated: 0
    In deed the Q barlow lense is too big so you cannot put it deep enough to mount it with the 1,25" extension ring I´m sorry.
    Answer by: Baader Web Team (Admin) on Apr 20, 2021 10:36:00 AM
  116. 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: 1
    We are very sorry, we do not offer these eyecups
    Answer by: Baader Web Team (Admin) on Apr 19, 2021 9:00:00 AM
  117. 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: -1
    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
  118. Rated: -2
    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: -4
    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
  119. 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: 2
    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
  120. Rated: 0
    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: 8
    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
  121. Rated: 6
    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: -2
    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
  122. 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: -5
    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
  123. Rated: 2
    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: 2
    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
  124. Rated: 4
    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: -2
    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
  125. Rated: -7
    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: 2
    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
  126. Rated: 0
    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: 4
    Yes, this works!
    Answer by: Baader Web Team (Admin) on Apr 6, 2021 4:47:00 PM
  127. Rated: 1
    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: 9
    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
  128. 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
  129. Rated: 2
    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
  130. Rated: 1
    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: -1
    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
    Answer rated: -1
    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: -1
    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
  131. Rated: 3
    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: 5
    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
  132. Rated: 0
    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
  133. Rated: 1
    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: 0
    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
  134. 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
  135. Rated: 2
    3/23/2021 6:38 PM Baader Standard Base - for MQR III & IV & for V-Bracket, and for all Vixen-style finderscope mount bases
    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: 6
    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
  136. Rated: 3
    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: -1
    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
  137. Rated: -3
    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: 2
    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
  138. Rated: -5
    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: -4
    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
  139. 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: 7
    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
  140. Rated: 0
    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: -6
    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
  141. Rated: -4
    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: 0
    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
  142. Rated: 7
    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
  143. Rated: 3
    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
  144. Rated: 3
    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
  145. 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: -4
    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
  146. Rated: 1
    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: -4
    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
  147. Rated: -1
    3/17/2021 4:39 PM Baader Standard Base - for MQR III & IV & for V-Bracket, and for all Vixen-style finderscope mount bases
    What type of screws do I need to fix the base to the Diamond Steeltrack focuser for refractor OTA ?

    Answer rated: 6
    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
  148. Rated: -6
    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: 9
    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
  149. Rated: 5
    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: 2
    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
  150. Rated: 2
    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: 6
    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
  151. Rated: 3
    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: -3
    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
  152. Rated: 1
    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: -6
    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
  153. Rated: 2
    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: -17
    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
  154. Rated: 6
    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: -3
    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
  155. Rated: 4
    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
  156. Rated: 1
    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: 3
    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
  157. Rated: 4
    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: 1
    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
  158. Rated: -3
    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: -1
    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
  159. Rated: 5
    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: 1
    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
  160. Rated: -6
    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: 6
    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
  161. Rated: 6
    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: 10
    Yes, sure, this works!
    Answer by: Baader Web Team (Admin) on Mar 1, 2021 11:55:00 AM
  162. Rated: 6
    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: -10
    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
  163. Rated: 3
    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: 2
    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
  164. Rated: -2
    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: 1
    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
  165. Rated: 3
    2/25/2021 12:57 PM Baader 2" ClickLock Diagonal Mirror
    Hey! I wonder whether it'll work well with Skywatcher 72ED?

    Answer rated: 9
    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
  166. Rated: 1
    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: 6
    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
  167. Rated: -9
    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: 4
    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
  168. Rated: -4
    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
  169. Rated: -2
    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: -3
    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
  170. Rated: -1
    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: 0
    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
  171. Rated: -4
    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: -2
    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
  172. Rated: 3
    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
  173. Rated: -6
    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: 0
    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
  174. Rated: 4
    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
  175. 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: 8
    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
  176. Rated: 4
    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: 5
    The filter works with f/2 systems
    Answer by: Baader Web Team (Admin) on Feb 9, 2021 8:17:00 AM
  177. 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: 1
    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
  178. Rated: -7
    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: -4
    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
  179. Rated: 1
    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: 1
    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
  180. Rated: -7
    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: -2
    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
  181. Rated: 2
    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
  182. Rated: 2
    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
  183. Rated: -3
    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: -2
    A dust cap is included.
    Answer by: Baader Web Team (Admin) on Feb 3, 2021 10:25:00 AM
  184. Rated: -4
    2/1/2021 7:32 PM Off Axis Guider for RCC Coma Corrector (RCC-OAG)
    What size is the prism?

    Answer rated: -2
    The prism size is 8x8mm
    Answer by: Baader Web Team (Admin) on Feb 2, 2021 8:53:00 AM
  185. Rated: 2
    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: 0
    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
  186. Rated: 5
    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: 0
    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
  187. Rated: -5
    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: 1
    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
  188. 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
  189. 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: 0
    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
  190. Rated: -2
    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: -6
    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
  191. Rated: -4
    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: 5
    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
  192. Rated: 0
    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: -1
    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
  193. Rated: -1
    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: 6
    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
  194. Rated: 5
    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
  195. Rated: 3
    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: -2
    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
  196. Rated: 4
    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
  197. 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: 7
    We are sorry there is no other version available
    Answer by: Baader Web Team (Admin) on Jan 18, 2021 10:58:00 AM
  198. 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
  199. Rated: -7
    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
  200. Rated: 2
    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: -3
    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
  201. 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
  202. Rated: 3
    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: 5
    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
  203. Rated: 2
    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
  204. 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: 4
    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
  205. Rated: 3
    1/12/2021 4:21 PM Baader MaxBright® II Binoviewer with case
    I am considering buying the Maxbright ll (mainly because of the clicklock) and was wondering how much difference optically I will see in comparison with original Maxbright that I own. I use them on a Celestron 8SE with TV 2" everbrite dielectric diagonal. Thanks!

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

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

    Thanks

    Matt

    Answer rated: 0
    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
  207. Rated: 9
    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
  208. Rated: 2
    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: -3
    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
  209. Rated: 10
    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: -1

    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
  210. Rated: 4
    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
  211. 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: -2
    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
  212. 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: 1
    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
  213. 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: 11
    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
  214. Rated: 4
    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: 12
    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
  215. Rated: -2
    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: -3
    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
  216. Rated: 1
    1/3/2021 5:36 PM Baader Wide-T-Ring Nikon with D52i to T-2 and S52
    I have a Hyperion 13mm lens and I would like to mount a Nikon D3200 Camera with a Tring mount. Can I do that?

    Answer rated: 1
    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
  217. Rated: 4
    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: 2
    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
  218. Rated: 3
    12/28/2020 3:35 AM Carl Zeiss 1¼" Abbe Barlow lens 2x
    To get this Balow to 3x, which Varilock should I buy? The Varilock 29 or the Varilock 46? Thanks a lot.

    Answer rated: 1
    You need an additional 70mm between the eyepiece clamp and the Barow.
    For an eyepiece, this can be done with a 40mm tube and two 15 mm tubes.
    For photography, you need to know the back focus/flange focal distance of your camera (55mm for a camera with T-2-adapter, or anything down to ca. 6mm for CCD-cameras.
    For a video module/planetary camera, where the sensor is close to the 1.25" nose piece (and thus similar to an eyepiece), we'd recommend the 40mm T-2-extension # 1508153 and the 20-29mm VariLock # 2956929
    Answer by: Baader Web Team (Admin) on Dec 29, 2020 1:34:00 PM
  219. Rated: 9
    12/26/2020 6:36 AM Baader MaxBright® II Binoviewer with case
    First Merry Christmas!
    I wonder if someone can help me. I have the original Binoviewers Maxbright and I want to change the screws (6) that hold the eyepieces with "knurdle" kind, easier to change eyepieces. Can you please tell me the size, someone said they are M4. But not sure. Are they metric? Coarse thread, etc.
    Really appreciated, I have many of your products and very happy with them.
    Thanks again.

    Answer rated: 1
    Hello,

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

    Best regards

    Baader Web Team
    Answer by: Baader Web Team (Admin) on Jan 11, 2021 9:27:00 AM
  220. 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: -5
    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
  221. Rated: 3
    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: 9
    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
  222. Rated: 4
    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: 4
    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
  223. 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: 7
    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
  224. Rated: 2
    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: -5
    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
  225. Rated: -2
    12/19/2020 11:36 PM Baader 31mm Hyperion Aspheric 2" Eyepiece
    Can I attach the 2.25 barlow to this eyepiece?
    I have T-2 Adapter #2956180B, Adapter #2956180A and Hyperion Zoom Barlow 2.25x.
    What exactly do I need to attach? Do I need an extra attachment?
    Thanks!

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

    You could also use the T-2-adaper B which is included with the Barlow lens and buy Baader Expanding Ring T-2f / M48m (T-2 part #29) # 2458110 to screw it into the 2" filter thread of any 2" eyepiece.
    Answer by: Baader Web Team (Admin) on Dec 21, 2020 11:31:00 AM
  226. 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: 1
    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
  227. Rated: 2
    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: 5
    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
  228. 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: -4
    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
  229. Rated: -3
    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
  230. Rated: 2
    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: 4
    This may be early next year
    Answer by: Baader Web Team (Admin) on Dec 21, 2020 10:22:00 AM
  231. Rated: 3
    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: 9
    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
  232. 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: 3
    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
  233. Rated: 6
    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: -2
    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
  234. Rated: 0
    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
  235. Rated: 2
    12/11/2020 10:19 AM Flat base plate (96x96mm) for BDS-NT
    Which is the thickness of the flat base plate, and how is it mounted on to the NT Diamond Steeltrack?


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

    Answer by: Baader Web Team (Admin) on Dec 21, 2020 10:57:00 AM
  236. Rated: -4
    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: 6
    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
  237. Rated: 1
    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
  238. Rated: -3
    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: 3
    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
  239. Rated: -3
    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: 6
    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
  240. Rated: 1
    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
  241. Rated: -5
    12/5/2020 3:41 AM StarAid Revolution Standalone Autoguiding - Revision A
    Do you know yet if it works with 10Micron mounts?

    Answer rated: -3
    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
  242. Rated: -2
    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: 3
    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
  243. Rated: 3
    12/1/2020 7:10 PM Baader Standard Base - for MQR III & IV & for V-Bracket, and for all Vixen-style finderscope mount bases
    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: 1
    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
  244. Rated: 2
    12/1/2020 3:52 AM 2" 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: 6
    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
  245. Rated: -2
    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
  246. Rated: 2
    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: 6
    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
  247. Rated: 3
    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: 3
    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
  248. Rated: 0
    11/24/2020 2:18 AM Filter cell 2" classic (8mm height)
    Are there any instructions on how to unmount and mount filters? I have an Optlong l-extreme that only had threads on one side and is unusable until I found this product.

    Answer rated: 3
    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
  249. Rated: -5
    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: 7
    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
  250. Rated: -10
    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?