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
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.
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
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!
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