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.
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| 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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