[Saturn488]

My uncle has a Celestron 8” SCT OTA on a really nice new bit of kit! The other night we were pointing it at the Moon but we couldn’t get the damn thing into focus! When focusing one way or the other the Moon was moving across the field of view but not focusing. The focus knob started to get tight if I turned it either way as I was turning it so much.

At certain points you can hear something coming from the back (possibly the mirror shift) but I got a feeling soemthing might be disconnected or lose.

I was hoping if someone can help me try to fix it? Today I am going to double check that it isn’t a backfocus issue. If that’s all ok then it might need to be looked at and I’m not confident enough to take it apart especially if it needs to be collimated.

Was wondering if there’s anyone here in Melbourne who has the ability to inspect/repair the issue?