Sharpless 302 in Puppis
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Scope: C8 f/4.2 Location: Dos Picos Park, Ramona, CA 17 January 2009 Camera: Artemis285
Exposure: 8 x 12 min H-Alpha (1x1 bin), 8 x 2 min RGB Exposures (2x2 bin)
Processing: Images were captured with Artemis Capture (as FITs). Aligned/stacked and dark subtracted in Astroart with Sigma Combine. H-Alpha and Color channels were scaled and color balanced in Astroart. Central Gradient was removed in Astroart. Channels were co-registered in Astroart. Luminance construction consisted of the H-Alpha exposure. Curves and Levels applied in Photoshop to the Luminance construction to optimize object features. A light background noise reduction was applied to the luminance construction in PixInsight LE (SBNR). Final LRGB combine was done in Photoshop using Luminance Layering in LAB color Space. A light sharpening was applied. Final Image size is approximately 1392 x 1044.
All exposures in this image were guided; North is up in this image. Sharpless - 302 is a region of emission nebulosity in the constellation of Puppis. The nebulosity is hydrogen gas excited to self emission by intense nearby stars. Sharpless - 302 is part of molecular cloud A in front of supershell GS234-02 and is located at a distance of about 5,800 light years distant from Earth. The Horizontal FOV is 36'.
Image center is located approximately - Equatorial 2000: RA: 07h 31m 41.0s Dec: -16°58'43"
All images and content remain the property of Jim Thommes - copyright 2003 - 2012
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