Is f/8 at least starting to be sufficient for galaxy imaging? I have an FSQ-106 with all the extras - reducer and extender, so I run the gammut of f/3.65, f/5 to f/8.
I did image some GX with the FS78 at native f/8 and the detail, scale and resolution seemed OK.
Opinions appreciated. Of course, I cannot bolt on ANOTHER extender to make it f/12.8....
