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The Great Globular Cluster in Hercules
Messier 13, or the Great Globular Cluster in Hercules, was discovered by Edmond Halley in 1714. The cluster is estimated to contain from 300,000 to a half-million stars and is about 26,000 lights years distant from our solar system. The image was taken with a 12.5” RCOS f/9 telescope operating at f/5.94 (Astro-Physics CCDT67 telecompressor) and a SBIG STF8300c camera on a Paramount ME in Mayhill, NM on 28 May 2016 (6 x 20 min lights @ -20 degrees C; 40 darks; 128 bias; 128 flats). Processed with PixInsight 1.8.4.1195.
M1finalJPEG.jpg Messier78final.jpg Messier_13_in_Hercules.jpg NGC2903PixInsightfinal.jpg SoapBubbleHaCropfinal.jpg
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