Quote:
Originally Posted by kalon
I have the 1600MM. The FRA400/5.6 comes with an adaptor that you can screw straight in to the ZWO filter wheel and 1600MM camera to give you perfect backfocus.
I now also use the 1600MM on my GSO 8" RC giving me 1625mm focal length, and that is meant to be slight oversampling, but that doesn't seem to be the case (to my eye)... Check out some of my work using both scopes at https://telescopius.com/profile/kalon |
The worse case is under sampling, this is what i read, so using longer focal length isn't a problem, i don't have long focal length scopes except my 8" F5 which is 1000mm perfect one and Mak 180mm which 2700mm but it is not for DSO anyway.