I installed some Bob's Knobs on the Meade LX200GPS 12" and was going to use the Hubble 5-star artificial star generator for collimation. I did the calculation as to how far away to place it. About 40 feet. So I measured to a tree in the back yard from my home office window. 58 feet. The telescope is set up in that room. Unfortunately... the scope does not focus that close. In fact, about the closest I can focus is my neighbor's back fence about 200 feet away. Guess I'll have to ask him if I can set the Hubble on his fence one of these nights. Hahahaa! Anyone ever used one of these Hubble 5-star artificial stars? Any tricks I should know of? Equipped with his five senses, man explores the universe around him and calls the adventure Science. - Edwin Powell Hubble