“Also, the Nikon flange distance is totally irrelevant for pure prime focus with a DSLR. Flange distance is a rule for camera lenses and other focal/field adjusters like barlows, field flatteners, and field reducers. If you're doing naked camera-newt images you can ignore the flange distance.”
The Baader coma corrector is cleverly designed to work both with T adapters and M48 adapters for Nikons and Canons, probably other DSLRs as well, for standard ‘fast’ Newtonians
BUT for Schmidt-Newtonians the ideal flange-to-sensor distance is said to be 49 mm rather than 55 mm.
So one of those thin adapters linked-to above might be a better choice for people like me with SN scopes.
I’ve been trying to find a thin M48 Nikon adapter to use with my Nikon D810a and SN10, but with no luck. I might have to accept using the thin T adapter and just accept some vignetting.
Edited by KLWalsh, 27 April 2019 - 07:50 AM.