The Hercules Cluster (M13)

Posted by Jean B
on Thursday, July 21, 2011

by Jean B.

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This is my first DSO observation. It was a small step, but surely a nice victory over the light-polluted city of Montreal. It took me nearly an hour to locate the dim cluster trying to keep my eyes away from neighbor's lights, street lights and airplanes flying over my head. Since I had no success with photography, I decided to sketch M13 and it was rewarding. Everything was pretty faint but using averted vision I was able to see the brightest stars and M13.

At an apparent magnitude of +5.8, M13 is approx 25,000 light-years away and is ~150 light-years in diameter.

  • 150 mm, newtonian;
  • motor drive EQ mount;
  • 8X eyepiece;
  • Black pastel paper;
  • White pencil;
  • Photoshop CS2 for contrast and legend
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