The Messier 37 is the richest open cluster in the constellation Auriga and it's the brightest of the three open clusters in Auriga. The M37 is roughly 300 million years old and contains over 500 stars with roughly 150 stars brighter than magnitude 12.5. M37 also contains at least a dozen red giants with the hottest main sequence star of spectral type B9V. Its distance is between 3,600 to 4,700 light years and the apparent diameter of 24' corresponds to a linear extension of about 20 to 25 light years.
Equipment: Exposure details: Location:
Telescope: RCOS 12.5 Open Truss
Mount: Paramount Me
Camera: SBIG STL-11000M
Filters: Baader LRGB
Luminance: 6x10min
Red: 3x10min
Green: 3x10min
Blue: 3x10min
Rachia, Veroia, Greece
N 40o29'00.0" - E 22o12'55.0"
10 February 2011
Image details:
Acquisition: MaxImDL Reduction/stacking: CCDStack RGB weights: Aladin/eXcalibrator
RGB combine: CCDStack LRGB creation: Photoshop CS3
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