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Sharpless 301 in Canis Major



Scope: C8 at f/3.8,  Location: Dos Picos Park, Ramona, CA   17 March 2007,   Camera: Artemis285

Exposure: 8 x 420 sec H-Alpha (1x1), 8 x 90 sec RGB Exposures (2x2). 

Processing: Images were captured  with Artemis Capture (as FITs).  Aligned/stacked in Registax 4 and saved as FITS. Luminance,  H-Alpha  and Color channels were scaled and  color balanced in Astroart. Channels were co-registered in Astroart.  Central Gradient removal was performed in Astroart. Curves and Levels applied in Photoshop to optimize object features. Luminance construction consisted of the H-Alpha exposure. Final LRGB combine was done in Photoshop using Luminance Layering (or LLRGB) - G2V calibration factors were applied.  PixInsight SGBNR  noise reduction was lightly applied to the background . Selective sharpening was applied to nebula features in Photoshop with a layer mask.  Final Image size is approximately 1392x1040.

 North is up in this image. This nebula structure is catalogued as one of the Sharpless objects - Sh2-301.  It is located in the constellation of Canis Major about midway between the cluster pair M46, M47 and the cluster M41.  The Horizontal FOV is 42'.

Image center is located approximately - Equatorial 2000: RA: 07h 09m 55s Dec: -1830'07"


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

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