Quote:
Originally Posted by Craig_
I have made small rotations, with no visible difference, although this was moreso to try and centre the mask in case that was the issue. My optics are pretty good on the Esprit 80, so not sure that will be the issue but happy to try it next clear night as I'll try anything  Cheers |
Sounds like you have a centring issue and that may explain the focusing error.
Do you have a picture of your mask attached to the scope? I'd like to know what's going on because I never experienced this problem.