This was a test of the Buhtinov diffraction focusing mask. Taken 12-3-08 with a 90mm Megrez APO, Atik 16C CCD camera on a Losmandy GM-8 mount from Nazareth, PA. Capture & guiding were with Nebulosity and PHD. 16x10sec subs. PS CS2 +Noel Carboni Tools post