Coma Cluster of Galaxies in Coma Berenices
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Scope: Zenithstar 66 mm APO  at f/4.7, Location: Blair Valley, Anza Borrego Desert, CA   31 March 2011  Camera: Artemis285

Exposure: 10 x 8 min  (1x1 bin) exposure with UV/IR block, 8 x 3 min (2x2 bin) RGB exposures.

Processing: Images were captured  with Artemis Capture (as FITs).  Aligned/stacked and dark subtracted in Astroart with Sigma Combine.   IR / UV Blocking  filter  and Color channels were scaled and  color balanced in Astroart.  Channels were co-registered in Astroart.   Central gradient removal was performed in Astroart. Luminance channel consisted of the IR/UV blocking filter exposures.  Curves and Levels applied in Photoshop to the Luminance channel to optimize star depth.    Final LRGB combine was done in Photoshop.    Final Image size is approximately 1392 x 1040.

North is up in this mirrored image. Galaxies NGC4874 and  NGC 4889 are centrally prominent in this image of this galaxy cluster - the Coma Cluster . Many of the apparent stars are member galaxies of the Coma Cluster. This field is in the constellation of Coma Berenices. Other NGC objects in this field are  NGC 4872, NGC 4921, NGC4911, NGC 4895, NGC 4860.  The Coma Cluster's distance from Earth is approximately 320 to 370 million light years. This image replaces and earlier image that can be seen in the Archives here .  Horizontal FOV is 100'

Image center is approximately - Equatorial 2000: RA: 13h 00m 08s Dec: +2758'35"

 

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