This is the mis-matched pair of globular clusters in Coma Berenices: M53 at top, a modestly bright and rich cluster, and NGC 5053 at bottom, a dim and sparse globular. This is a stack of just 5 x 8-minute exposures with the Canon EOS Ra at ISO 800 through the SharpStar 140mm refractor at f/6.5 with no field flattener.
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.
