Sharpless 129 in Cepheus
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Scope: Sigma EX APO 150 mm DSLR lens at f/4, Location: Laguna Mountains, CA 19 September, 2009, Camera: Artemis285
Exposure: 12 x 7 minutes H-Alpha (1x1), 7 x 3 minutes RGB Exposures (2x2).
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. 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. Final LRGB combine was done in Photoshop using Luminance Layering in LAB color Space. Color balance (more red) was applied to nebulosity at low signal levels (where there was luminance data but little to no color data). A light sharpening was applied to the final image. Final Image size is approximately 1392 x 1040.
North is up in this image. This is a hydrogen emission complex catalogued by Sharpless in his catalog as SH2-129. It is sometimes referred to as the "Flying Bat Nebula". This field is located in the constellations of Cepheus. This emission complex is about 1,300 light years distant from Earth. The Vertical FOV is 250'.
Image center is located approximately - Equatorial 2000: RA: 21h 09m 25.4s Dec: +59°57'44"
All images and content remain the property of Jim Thommes - copyright 2003 - 2012
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