m031_57deg_ed80f075_20d_800iso_10x300sec_sigmed_ps-lvl-curve-usm.jpg
M31 - The Great Andromeda Galaxy (and M32 and M110)
Taken with Orion ED80 f/7.5, canon 20d, 10x5min 800iso exposures stacked with Images Plus 2.83 (sigma clipped median combine). PhotoShot levels, curves, unsharp mask.