One of the most detailed spiral galaxies for amateur telescopes is M66 in the Constellation of Leo. This is the first tri color image of a galaxy with the 12.5" at prime focus. Note the pink hydrogen clouds in the bluish arms, congested by O-B associations. Seeing was as good as it gets from here in Payson.

Instrument:  12.5" f/5 Newtonian
CCD Camera:  SBIG237
Exposure:  L=40mins, R=10m, G=7m, B=12m (Binned 2x2)
Filters:  RGB
Location:  Payson, Arizona
Elevation:  5150 ft.
Sky:  Seeing 8/10, Transparency 6/10
Temperature:  22 F