The Whirlpool Galaxy in Ursa Major (The Big Dipper).

This monster spiral interacting galaxy pair is about 24 million light years from earth. With a decent size telescope you can easily make out the spiral shape under a dark sky.

Image Info:
Shot 5.2.2014
Atik 314L+ Monochrome at -15C
12" F4 OTA with Sky Watcher F4 CC
Atlas EQ-G
Nautilus FW + Orion 2" RGB Filters
L - 30 X 3min
R, G, B, - 19 X 2min
DSS and Photoshop