How or connect a camera lens to a mono ccd/cmos camera

[catburglar]

I’ve got a Samyang 135mm lens and Canon DSLR. Imaging at F2 is seriously fast so I’d like to use the lens with a mono astro  camera?

I can see a few options to convert the canon ef bayonet to a M42 t thread, but they don’t seem to leave enough room to squeeze in a filter wheel and still maintain the 44mm flange - focal plane distance.

So if I were to go down this route for LRGB or narrowband would I have to do manual filter changes?

[Allinthehead]

I used this with a filter wheel and asi 1600.  https://www.firstlightoptics.com/zwo-accessories/zwo-eos-lens-adapter-for-efw-mini-asi1600.html

[catburglar]

Ah yes- I’d seen that but wasn’t sure it would have the correct spacing with the other ZWO cameras. Had a look on the ZWO site, and I think it it will work with both the 178 and 183 cooled series at least. So it’s looking promising.