|
If you know the strengths and weaknesses of your gear you're 90% of the way there. If your airy disk inside and outside focus is good you must be pretty damned close.
I found my (8") Newt rarely needed collimating, even after long trips padded in blankets in the boot. Always a good idea to check, and experience over time with that process gives you and idea how far out you have to be before it affects viewing (or photography). Will depend too on tension on your secondary screws, springs/locking bolts on your primary, as well as focuser movement we talked about above.
|