Spiral Galaxy NGC 3628 in Leo - aka Arp 317

Spiral Galaxy NGC 3628

A 60 minute exposure with an STL-1301E CCD camera thru Kopernik's 20-inch F/8.1 Ritchey Chretien Cassegrain telescope reduced to F/5. The field of view is about 20x20 arc minutes.

Quote from The Deep Sky Field Guide to Uranometria 2000:

"Spiral Galaxy, peculiar, type Sb pec sp III; Edgewise, has two equatorial planes marked by dark matter tilted a few degrees to each other."

NGC 3362 is an edge-on spiral galaxy in the constellation Leo that is characterized by a fine narrow dust lane. This galaxy, also know as Arp 317, is a part of the Leo Triplet of galaxies. It is larger but fainter than the other two, M-65 and M-66. This galaxy is an X-ray source and has several discrete radio sources. It also appears to have an Active Galactic Nucleus.

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George Normandin, KAS

June 21th, 2009