M5 - Globular Cluster in Serpens

M5 was discovered by Gottfried Kirck in 1764. It is one of the largest and oldest globular clusters in our galaxy. It is 165 light years across and is estimated to be about 13 billion years old, nearly the age of the universe itself.
Telescope: Orion 10 in. f/4.7 Newtonian; Baader coma corrector
Camera: Modified Canon T2i (550D); ISO 800; Raw capture
Mount:  Losmandy G11
Guiding: SSAG on 50mm Lumicon finder scope
Exposures: 13 @ 3minutes
Processing: Images were focused using Live View. They were converted to tiff files in Canon Digital Photo Professional before being calibrated, aligned and combined in ImagesPlus. The composite was slightly cropped and adjusted in Photoshop. Noise was reduced using Topaz DeNoise. GradientXTerminator was applied as well.
Note: Taken from my backyard observatory in southeastern Minnesota on 6/7/12. Temp: 70F; Humidity: 50%
   
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