Hi ATM's. My friend, Viggo is going to make a 10 inch catadioptric shiefspiegler f/20. He already has the mirors and lens. Does anyone have experience with such a telescope and even better have drawings. We will be grateful if you will mail one of us. Clear skies Anders Eisum Thisted, Denmark. eisum@image.dk Viggo Pedersen Sundby Mors, Denmark. viggopedsundby@image.dk