Hello all
Anyone bought this scope from APM?
https://www.apm-telescopes.de/en/tel...5-focuser.html
It is f7.8 and I plan to use it with a 8300 CCD. Considering it's 'slow' do I need a field flattener/corrector if I want to use it at full focal length?
I have the AP's CCDT67 to make it 'faster' but this is not a flattener. Should I get the dedicated 0.79x reducer/corrector (more $$$)?
Appreciate your comments
Regards,
Mik