Hi all,
I just attempted my first collimation of an 8" Dob I bought last week. Took me about an hour of fiddling around to figure out what was going on - the relationship between the three screws and the centre screw on the secondary mirror wasn't obvious to me and threw me off track for a while.
Anyway I think I have it all sorted but was wondering how accurate the collimation should be for most purposes? How good is "good enough?"
I've included two pictures of the results of my collimation (sorry for the rubbish quality). First image was done on a tripod with the collimation tool's crosshair in focus so it's a more accurate illustration. Second image was hand-held but has better details in the middle. Is that good enough?
Thanks
