NGC 4641 in Coma Berenices- detail

Combined optical data from:

Isaac Newton Telescope (2.5 meter), INT wide field mosaic camera, 60 minute B, V. R, Ha exposure, April 3, 2008

Blackbird Observatory (.5 meter), SBIG STL-11000, 802 minute L, R, G, B exposure, January 20- 30 & August 26, 2009

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