The globular cluster M55 in Sagittarius, taken from New Mexico, Nov 10, 2014, with the TMB 92mm refractor at its native f/5.5 focal ratio and using the Hotech field flattener, and Canon 6D for a stack of 4 x 6 minute exposures at ISO 800. The object was low in the southwest.
Messier 56 globular cluster in Lyra taken July 30, 2011 from home with 130mm Astro-Physics refractor and Canon 7D camera, for stack of 5 x 5 minute exposures at ISO 1600 and f/6.
M57 Ring Nebula, taken Oct 6, 2007 with 5-inch Astro-Physics apo refractor at f/6 with Canon 20Da camera at ISO 400 for stack of 4 x 15 minute exposures. Guided with Meade DSI/66mm guisdescope and PHDGuide sofware. Some misguiding in Dec. No field flattener on 5in scope.
