Messier 12
Photographed by Scott Davis on June 1, 2013
From Ahwahnee Hills Observatory
Description:
Messier 12 is a globular cluster in the constellation of Ophiuchus.
Imaging Camera:
Canon EOS 60D
Imaging Scope/Lens:
Orion Astrograph 8" f/3.9 Newtonian
Mount/Tripod:
Celestron CGEM (Hypertuned)
Guide Scope/Camera:
Orion Shorttube 80mm w/ Starshoot Autoguider
Exposure Details:
Camera settings were ISO 1600 with a shutter speed of 50 seconds. This stacked image is a composite of 40 light frames and 15 dark frames, and was calibrated with 50 flats, 50 dark flats, and 50 bias frames.
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