Click here for a larger version of this image, and a negative version with the galaxies and supernova identified.
This is a 16:10:10:20 minute exposure with a STL-1301E CCD camera thru Kopernik's 20-inch Ritchey Chretien Cassegrain telescope taken on April 10, 2005 at 0:30 UT. The field of view is about 20x20 arc minutes, with North at the top.
NGC 3746, Barred Spiral Galaxy (part of the Hickson 57 Group):
NGC 3746 is one member of the compact galaxy group Hickson 57. It's a Barred Spiral Galaxy with a nearly complete inner ring and tightly wound arms. This galaxy was also the host for Supernova 2002ar, a Type Ia that reached a maximum magnitude of 16.5. A rough distance estimate to NGC 3746 and SN 2005ba is 480 million light years.
Hickson 57 - Copeland's Septet - Arp 320, Compact Galaxy Group:
This is a compact group of eight galaxies that are interacting and possibly merging. This group in the Constellation of Leo was discovered in the 19th Century and is also named for its discoverer: Copeland's Septet. See our Hickson 57 page for more information on this group.
Dreyer description in the NGC:
Classification: Compact Galaxy Group
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George Normandin, KAS
April 15th, 2005