Whale and Hockey Stick Galaxies
The galaxy pair NGC 4631 (the Whale) and NGC 4656 (the Hockey Stick) lie
in the small constellation of Canes Venatici, and are believed to be
gravitationally bound. The Whale galaxy has a small companion (the whale's
calf) designated NGC 4627. The Hockey Stick (NGC 4656) is actually an
interacting pair of galaxies, the other of which is NGC 4657.
Takahashi Sky 90 at f/4.5
SBIG STL-4020M + remote head
Takahashi EM-200
Hutech LPS filter
Luminance: 4h20m (5 minute exposures)
RGB: 45 minutes each channel (5 minute exposures)
Processed with Maxim/DL, CCDStack, and Photoshop CS4
Noel Carboni's Astronomy Tools