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M 90 - NGC 4569 - Arp 76
Penryn, California
April 2004/2009
FS-128  (ag, ST-4)
ST-10XME   RGB 15 minute subs (2004)
ST-2000XM Lum 10 minute subs ( 2009)

M 90 is classified SBab and has a surface brightness of magnitude 13.1.  M 90 is a fossil galaxy in the last stages of evolution.  Starburst activity is occurring in a nuclear ring fueled by bar induced gas inflow which starburst activity in turn fuels an outflow of gases.

IC 3583 is at center left and is a ram stripped galaxy that may have had some past interaction with M 90.