55mm backfocus and CAA ROTATOR

EJ81fE0C

Hello 👋 ,
My wife order me the new Zwo CAA rotator as a gift 🎁. I have zwo 294mm pro and a 2'' filter wheel.All these are attached on a ed80 with a reduser/flattener 0.85x.Need help how to get the 55mm backfocus with the CAA rotator please 🙏 😀

cengell

The ZWO CAA is 16.5mm thick, so take 55mm - 16.5mm = 38.5mm, so take your camera sensor which is 17.5mm includes 11mm t-ring and 6.5mm to sensor (17.5mm) so 38.5 - 17.5 = 21 and your 2" filter wheel is 20mm so that's 1mm and maybe a 1mm spacer maybe needed? But this should be very close to the 55mm back focus..

Christopher

EJ81fE0C

The camera with 11mm t ring can't attached on the filter wheel.You have to remove the ring so you can attached the camera to the filter wheel.So the thing is how you attached the 11mm ring to the filter wheel and the rotator

Fumiyuki

I wish there was an M42 version of the CAA accessories.
Telescope -> CAA -> EFW -> Camera
CAA -> * Only M54 or M48 here.
Because the connection to the 36mm and 31mm EFW is M42.
If the accessories were M42, it would be easy to convert to M48.

Pilleway

Hi, will someone be able to confirm if I can do the following set up with the CAA;
Telescope->EFW->CAA->EFW->OAG->ASI2600MC
the reason is that I do have interference of the EFW with the pier and that is why the set up behind will be able to rotate,
Is this possible?
Is there any recommendation?