Bruce, I have Bob’s Knobs on the 10-inch Meade. I’ve never collimated with a laser, but with a star you’re out-of-focus when you do the collimation. It takes me about 10 minutes to do a decent collimation with Bob’s Knobs and a star if I think the scope needs it. Before I got Bob’s Knobs it was a pain and took me about 30 minutes, at least. You have to have better finger dexterity than me to mess with those small Allen wrenches in the dark. Dave