I recently bought a Takahashi FS-102 (f/8) and just now an APM 140 (f/7) SD APO with the smaller 2.5" focuser. Depending on seeing conditions I will either use the 4" or the larger version. I would also like to do some basic astrophotography with those two refractors (either with a Canon APS-C format DSLR or a ZWO ASI 294MC Pro).
Question: Will the small Riccardi 0.75x reducer with M63x1 thread be a good match for both scopes? I like to save some money and buy a reducer that hopefully produces good results on both scopes. Is this feasible?
I have a M72 to M68 adapter from Baader installed on the TAK and could then use a M63-M68 adapter and screw the reducer into the drawtube. On the camera side I can use adjustable M48 or T2 extensions to reach the correct backfocus spacings. Similar procedure for the APM refractor.
Any thoughts on this?