I am a new convert to the barlowed laser method of aligning the primary on my 10" f/4.7 dob. It has worked so well, I wanted to make sure I shared it with everyone that will listen. Sky and Telescope has a great article by Nils Olof Carlin, Sky and Telescope, January 2003, p. 121-124 (they have it in their archives for download for $$. I'm pretty sure it's not legal to post it here.
It is great fun putting the barlowed laser in and moving the laser and focuser all over the place while the shadow of the center spot never moves at all. As accurate as a cheshire (maybe more in my case) and incredibly easy to use. If you have a fast Newt, you should be aligning it with a barlowed laser.
Tom
It is great fun putting the barlowed laser in and moving the laser and focuser all over the place while the shadow of the center spot never moves at all. As accurate as a cheshire (maybe more in my case) and incredibly easy to use. If you have a fast Newt, you should be aligning it with a barlowed laser.
Tom
