Brent Wilson wrote:

I have found that laser collimation is only a rough alignment procedure. The final touch needs to be made by eye, . . .

As always - a final tweak to one's personal preference is done with eye.

. . . preferably using stars in the center of the field of view. A carefully marked mirror center and a peephole alignment . . .

Nice trick with the star. I'll have to give it a try. I guess it's a matter of skill and experience. No matter what I do, laser collimation seems to get it that last bit that I can't do by eyeballing it. - Canopus56 __________________________________ Do you Yahoo!? Read only the mail you want - Yahoo! Mail SpamGuard. http://promotions.yahoo.com/new_mail