M6 & M7
Photographed by Fred Lusk on July 17, 2004
From Courtright Reservoir, Fresno County, CA
Description:
This photograph covers a 10°x15° swath around the open cluster M6 (the Butterfly Cluster) and M7 (Ptolemy's Cluster). The "Stinger" of Scorpius is in the lower right quadrant of the image.
Imaging Camera:
Olympus OM-1N (35 mm SLR) piggybacked on telescope
Imaging Scope/Lens:
Zuiko 135 mm f/3.5
Mount/Tripod:
Celestron C5+ single fork arm with integrated wedge
Guide Scope/Camera:
None
Exposure Details:
Film: Kodak EliteChrome 200. Aperture: f/3.5 (or f/5.6?). Exposure: 20 minutes.
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