AstromaniaM42X0.75 Female to SCT Male Thread (2", 24 TPI) Telescope Adapter

As described

I bought this adapter to use my 0.63 SCT reducer on my refractor, I need to attach one end to a 2" to T2 and then plug it on the 2" focuser, at the camera end I use my SCT to canon spacer or just remove the canon adapter and screw it on the T2 adapters on a dedicatec cooled camera and works great.

I used this to be able to mount a filter wheel between my flip mirror and the scope (CPC11). That way the filter works for both the eyepiece and the camera, instead of just one or the other. I did have to adapt the m42-f thread to m48-m threads, but that didn’t seem to affect the light path.

This is a somewhat specialized adapter, I used it to adapt a Televue TRF2008 reducer to an Apogee U8300 camera. For that purpose, it works well. And much cheaper than the dedicated Apogee adapters (if you can even still buy those).