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NGC 3690 - Arp 299
Ursa Major
Penryn, California
February 2008
M 250 @ f9.3 (ag, ST-4)
ST-10XME LRGB 10 minute subs

Three galaxies in collision, NGC 3690A/B and IC 694.  NGC 3690 is a IR bright starburst galaxy and a supernova factory (Neff, et. al., 2004).  NGC 3690 is classified as Sb/pec, distance has not been measured.

Both NGC 3690a/b and IC 694 contain active galactic nuclei in the process of merging (Ballo, et.al, 2004).