Good one Trev!
Yes great advice given! My eyes are rather crappy as well so I understand.
Usually takes me a good 15 min till I am happy with the focus by taking like 10 sec shots of a bright star near my subject! and maybe 20 test shots downloaded to the pc before I do a long exposure...
Hartmann mask shall help with achieving focus as well as putting some string or fishing line to make diffraction spikes on the front of your refractor with a temporary slip on rig?
Keep at it!
cheers Gary