Melotte 111 - The Coma Berenices Star Cluster

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  • RA: 12:25
  • Dec: +26
  • Magnitude: 1.8
  • Distance: 288 ly
  • Size:  275.0 arc min
  • Constellation:  Coma Berenices


  • Scope: 300 mm Olympus lens at f/5.6
  • Autoguider:  ST-4 in average mode
  • Sky conditions:  good transparency and good seeing
  • Film: Kodak Supra 400
  • Exposure:  25 minutes
  • Date:  April 26, 2003



Comments:  This was a rather cool "Spring" night in Northern Illinois with a low in the 30s.  The Coma Cluster is a large and conspicuous cluster first catalogued by Ptolemy.  It is scattered over an area of about 4.5 degrees diameter.  The edge-on spiral galaxies NGC4565 can be seen in the lower left corner of the picture and NGC4559 in the upper left corner.