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?
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?
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
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
Our company exists now for more than 50 years. In this time, more than 15.000 Baader Planetariums (the first patented product of our company) help all over the world to give students an understanding of astronomical correlations. In our own manufactory, more than 500 observatory domes have been produced and delivered turnkey-ready. Instruments and telescope accessories from "Baader" are known for their high qualities by many astronomers and universities. We consider it our duty and obligation, not only to sell telescopes, but an indivdually selected telescope system, that brings you a lifetime of joy.