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M37 in Auriga



Scope: Megrez II at f/5.8, Location: Dos Picos Park, Ramona, CA   13 January 2011  Camera: Artemis285

Exposure: 20 x 3 min  (1x1 bin) exposure with UV/IR block, 7 x 3 min (1x1 bin) RGB exposures.

Processing: Images were captured  with Artemis Capture (as FITs).  Aligned/stacked and dark subtracted in Astroart with Sigma Combine.   IR / UV Blocking  filter  and Color channels were scaled and  color balanced in Astroart.  Channels were co-registered in Astroart.   Central gradient removal was performed in Astroart. Luminance channel consisted of the IR/UV blocking filter exposures.  Curves and Levels applied in Photoshop to the Luminance channel to optimize star depth.    Final LRGB combine was done in Photoshop.    Final Image size is approximately 1500 x 1121.

North is up in this image. The image was guided for all exposures. M37 is the richest of the three Southern Auriga open clusters (M36, M37, M38) - its star population is about 500 stars with about 150 greater than Magnitude 12.5. M37 is of moderate age as open clusters go - it is estimated about 300 million years;  its distance is estimated at 4,400 light years.   An earlier image of M37 can be seen  in the Archives here.  Horizontal FOV is 66'.

Image center is approximately - Equatorial 2000: RA: 05h 52m 24s Dec: +3233'00"


All images and content remain the property of Jim Thommes - copyright 2003 - 2012

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