Open Cluster NGC663
Photographed by Scott Davis on September 7, 2013
From Eastman Lake, California
The Owl Cluster (upper left), catalogued as NGC 663 and Caldwell 10, is a beautiful open cluster in the constellation Cassiopeia. It has a total of approximately 400 member stars and lies at a distance of 6,850 light years from Earth. Also visible in this shot is Open Cluster NGC 654(lower right).
Imaging Camera:
Canon EOS 60D
Imaging Scope/Lens:
Orion Astrograph 8" f/3.9 Newtonian
Celestron CGEM (Hypertuned)
Guide Scope/Camera:
Orion Shorttube 80mm w/ Starshoot Autoguider
Exposure Details:
Camera settings were ISO 1600 with 40-second exposures. A total of 36 light frames, 15 dark frames, and 40 each of flat, dark flat, and bias frames were combined to create this final image. Total integration time is 24 minutes.

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