Was so excited to try out the new guide scope (Skywatcher 80mm f/5) and camera (Meade DSI II Pro) tonight...
...but couldn't get focus
With the camera "prime", ie connected directly into the scope's 1.25" focuser, I couldn't get focus even with it focused all the way out. The scope came with a kit of 2 1.25" eyepieces and a 1.25" 45 diagonal, so thought I'd try that. But with the camera in the diagonal it seems it was too far now, and couldn't get focus with it all the way in. Guess I need somewhere in the middle...
Similar problems when I tried it on my ED80 Pro. Just couldn't get focus all the way out prime, and with 2" 90 diagonal couldn't focus all the way in.
I'm guessing I need some sort of extension tube? How do I know or work out how long to get? It'll need to be a 1.25" one.
Anyone else have this setup with similar problems or am I missing something silly?