M13 in Hercules used as a subject for a recent stacking practice session. The full-size TIF version actually looks pretty encouraging.
Date: July 8 2010
Telescope: W.O. Megrez 90 on EQ5 GEM
Camera: Canon Digital Rebel Xti, prime focus, ISO 800
Exposure:15x45 second lights, 10 darks.
Processing: Deep Sky Stacker, Irfanview, Photoshop 6.