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The Butterfly Cluster (M6) Photographed by Scott Davis on July 8, 2013 From Golden State Star Party   Description: The Butterfly Cluster, catalogued as M6 and NGC6405, is an open cluster located in the constellation Scorpius. It lies at a distance of approximately 1,600 light years from Earth.   Imaging Camera: Canon EOS 60D   Imaging Scope/Lens: Orion Astrograph 8" f/3.9 Newtonian   Mount/Tripod: Celestron CGEM (Hypertuned)   Guide Scope/Camera: Orion Astrograph 8" f/3.9 Newtonian   Exposure Details: Camera settings were ISO 1600 with 45-second exposures. A total of 40 light frames, 15 dark frames, and 50 each of flat, dark flat, and bias frames were stacked to create this final image.

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