Here's a small modification that I made to my secondary mirror on my Newts.  Instead of hunting for Allen wrenchs to tweak the secondary mirror, I substituted bolts with indicator knobs epoxed and screwed on the heads.  Works pretty good for topping off the secondary mirror adjustment with a laser collimator. - Kurt http://members.csolutions.net/fisherka/astronote/photos/20090228NewtSetSrw.j...