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Arp 254 is the pair lined up N-S at the center. It is in the Appearance of
Fission class and the Atlas note is "position of brighter galaxy, companion
south". The barred spiral at the top is NGC 5917 and the long narrow
companion is MCG -1-39-3. The small galaxy a couple of minutes east of MCG
-1-39-3 is in the MAC and 2MASX catalogs but does not appear to be part of the
Arp, even though it is in the Atlas field. It looks like it would be an
interesting galaxy to image at a larger scale.
This image was taken on June 9, 2005.
In August of 2007, I was referring to the Kanipe and Webb book and
noticed that my image showed a star that was not present in Dr. Arp's
image, which happened to be reproduced on the same page. It is
marked on the reduced size image below. I was in a cabin in
Colorado, with very little Internet access, so Dennis Webb kindly
researched it for me and found that it was supernova 2005cf. I
would not have been the discoverer even I had been more prompt and
diligent in checking my image, since it was discovered on May 25, 2005,
by Pugh and Li using the Katzman Automated Imaging Telescope. It
was fun to find it, anyway. My image was very near maximum light.
Atlas Image
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