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NGC 2477 in Puppis



Scope: Megrez 80 mm APO  at f/5.8, Location: Blair Valley, Anza Borrego Desert, CA   25 January 2012  Camera: Artemis285

Exposure: 12 x 3 min  (1x1 bin) exposure with UV/IR block, 8 x 1.5 min (2x2 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 was removed 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 1800 x 1350.

North is up in this image. This cluster, NGC 2477 is a centrally dense open cluster that starts to look like a globular cluster - its star population is over 300 stars. It is located in the constellation of Puppis. The bright star near the bottom  is a magnitude 4.49 star - SAO198545 .  The estimated distance from Earth is 3,600 to 4,200 light years. This image replaces an earlier image that is now in the archives.  Horizontal FOV is 67'

Image center is approximately - Equatorial 2000: RA: 07h 52m 18s Dec: -3833'00" 


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

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