Great Hercules Cluster (M13)
Photographed by Scott Davis on March 9, 2013
From Eastman Lake, California
 
Description:
Also known as NGC6205, the Great Hercules Cluster is a beautiful, bright globular cluster of roughly 300,000 stars located in the keystone area of the constellation Hercules. It lies approximately 22,200 light years from Earth.
 
Imaging Camera:
Canon EOS 60D
 
Imaging Scope/Lens:
Orion Astrograph 8" f/3.9 Newtonian
 
Mount/Tripod:
Celestron CGEM
 
Guide Scope/Camera:
Orion Shorttube 80mm w/ Starshoot Autoguider
 
Exposure Details:
Camera settings were ISO 1600 with 80-second exposures. A total of 38 light frames and 20 dark frames were taken for this image.

 
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