This is a 10 minute exposure with an ST-6 CCD camera thru Kopernik's 20-inch F/8.1 Ritchey Chretien Cassegrain telescope taken on March 20th, 2001 at 2:30 UT.
Galaxies IC 3528, NGC 4550, and PGC 41845:
Spiral Galaxies IC 3528 (with Supernova 2001z) and NGC 4540 are a non-interacting pair in the Constellation of Coma Berenices. They have very different red shifts and probably are not near each other in space. They just happen to lie along the same line of sight. NGC 4540 appears to be in the Coma/Virgo galaxy cluster, lying about 60 to 70 million light years away, while IC 3558 is at a much further distance, roughly 730 million light years.
While NGC 4540 has a brightening in the middle, there is no definite nucleus. It has very many bright knotty arms with dark lanes. IC 3528 seems to be a normal spiral. Both of these galaxies have an Active Galactic Nucleus of Seyfert type I.
Dwarf Elliptical Galaxy PGC 41845 is partly cut off in the upper right of the Kopernik image. There is little published information about this dim 16th magnitude galaxy.
Classification: SAB(r)b, Sy1
Classification: SAB(rs)cd; Sy1
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George Normandin, KAS
March 29th, 2001