Messier 2 was first observed in 1746 by a French astronomer, Maraldi, while comet hunting with Cassini. Messier rediscovered it in 1760 but at first thought it was a nebula without any stars. This star cluster is 37,500 light years from earth and is one of the larger clusters at 175 light years in diameter. We are looking at a grouping of approximately 150,000 stars that date back 13 billion years. These kind of numbers are just hard to comprehend!
Photo Details
Messier 2
November 27, 2013
Orion 8" Astrograph on VX Mount
Nikon D3100 Camera - ISO 1600
35 sub frames at 30"/frame
Total Exposure Time = 17.5 minutes
Image Stacking in Deep Sky Tracker
Image Processing in Fitswork
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