The Great Globular Cluster in Hercules, Messier 13

Photographer
Steve Pastor
Email
astro3d@pvtnetworks.net
Location of photo
Mayhill, New Mexico
Date/Time of photo
May 28, 2016
Equipment
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 (6 x 20 min lights @ -20 degrees C; 40 darks; 128 bias; 128 flats). Processed with PixInsight 1.8.4.1195.
Description
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.
Website
https://www.facebook.com/steve.pastor.39