Posts Made By: John Levreault

Here's a pic of my 4-1/4" dob. The tube is based on the 4-1/4" F/10 in the first Berry book, with thin plywood for the sides and 3/4" at the ends and for the mirror cell. The alt bearings are PVC caps. The rocker/base is 3/4" plywood I had lying around. I built a triangular "ground board" with a T-nut that'll accept the bolt of a camera tripod. Not too wobbly when used at low power! It's been great for monitoring Comet Holmes with a 20mm eyepiece.

John