The Coma Galaxy Cluster - Abell 1656

Mouse over the above image to see the galaxies highlighted in Yellow.
Click on image for full size version.

Image Data: Object Information:
  • Exposure:  Clear - 22x300s
    • All binned 1x1
  • Telescope:  Stellarvue SV80S @ f/4.78
  • Mount:  MI-250 GoTo
  • Camera:  SBIG ST-2000XM CCD, SBIG CFW-8
  • Location:  My backyard in Goleta, CA
  • Date/Time: 
    • April 6, 2005, 00:32-03:39 PDT
  • Processing:  Taken  in MaxIm DL v4 using CCD Commander 100% UNATTENDED while I slept!  Reduced in CCDSoft.  Aligned sub-frames with RegiStar.  Combined sub-exposures with Ray Gralak's Sigma Clip.  DDP and Flatten background with MaxIm.  Curves, levels, selective sharpening/blurring in Photoshop.
  • Names:  Coma Galaxy Cluters, Abell 1656, NGC4874, NGC4889, NGC4921, NGC4839
  • Type:  Galaxy Cluster
  • Constellation:  Coma Berenices

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