NGC 4631 is a huge edge-on spiral galaxy in the constellation of Canes Venatici. It is of
magnitude 9.8, and commonly known as 'The Whale'. The smaller nearby galaxy is NGC
4627, the 'Pup'. This pair has been included in Arp's Catalog of Peculiar Galaxies as Arp 281.
There's a bridge of hydrogen gas connecting both galaxies. Distance is estimated at 30
million light years. Discovered by William Herschel in 1787 and somewhat later by Chesmont
Date: Mar 6, 10, 14 2008
Location: New Ringgold PA
Optics: Meade LX200R 12 inch at f/10
Mount: Paramount ME
Camera: SBIG ST-8XME / CFW-8
Guiding: ST-8XME integral guiding chip controlled by Maxim CCD
Exposure: LRGB: Luminance: 14x6 minutes unbinned; RGB: 8 each binned 2x2 - 5 min for
R,G, and 7 min for B.
Processing: Image acquisition using CCD Autopilot. Initial processing was done using
Maxim DL with subsequent processing with Photoshop.
Blue Mountain Vista Observatory New RInggold PA
NGC 4631 and NGC 4627