M39 - Open Cluster in Cygnus

M 39 (NGC 7092) is an open star cluster in the constellation of Cygnus, the Swan. It was discovered by Guillaume Le Gentil in 1749; Charles Messier added it to his catalogue in 1764. It lies approximately 1,000 light years away and spans 3.5 light years. It is a relatively loose cluster, containing 30 stars.

Telescope: Orion 120ED
Mount: Losmandy G11
Camera: Canon XS (Hutech modified); ISO 800; Raw capture
Exposures: 24 @ 5 minutes
Processing: Camera was focused using Live View. Images were converted with Canon's ZoomBrowser. They were then calibrated, aligned, and combined in ImagesPlus. The composite image was adjusted (Curves) in Photoshop CS2.
Note: Taken from my backyard observatory in southeastern Minnesota on 9/11/09. Temp: 55F; Humidity 90%
   
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