M2 - Globular Cluster in Aquarius

M 2 (NGC 7089) is a globular cluster located in the constellation of Aquarius (the water bearer). It was disovered by Jean-Doninique Maraldi in 1746 and rediscovered by Charles Messier in 1760. He believed that it was a nebula. In 1783, William Herschel was the first to reslove it into individual stars.

M 2 lies approximately 40,000 light years away and spans 175 light years. It is one of the largest globular clusters known, containing approximatly 150,000 stars.

Telescope: Orion 120ED
Camera: Canon XS (Hutech modified); ISO 800; Raw capture
Mount:  Losmandy G11
Guiding: SSAG on 300mm Komura lens
Exposures: 9 @ 5 minutes
Processing: Images were focused using Live View. They were calibrated, aligned and added in ImagesPlus. The composite was cropped by 50% and adjusted (Levels, Curves) in Photoshop CS2.
Note: Taken from my backyard observatory in southeastern Minnesota on 9/13/09; Temp 55F
   
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