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Sharpless 235 in Auriga

 

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Scope: FSQ-106N at f/5, Location: Blair Valley, Anza Borrego Desert, CA   17 January 2015  Camera: Atik 383L

Exposure: Exposure: 8 x 10 min  (2x2 bin)  and 8 x 10 min (1x1 bin) exposure with Hydrogen Alpha filter, 8 x 4 min (2x2 bin) RGB exposures.

Processing: Data Collection -  Sequence Generator Pro (as FITs).  Calibrated, stacked (Kappa Sigma Combine) - Deep Sky Stacker. LRGB channel registration, equalization, and central gradient removal - Astroart.  Curves, Levels, RGB combine - ImagesPlus. Luminance Layering, final stretch, and finishing  - Photoshop. This image is a  Ha- RGB combine with Luminance layering.  Color saturation in LAB color; H-Alpha exposure stacks were used for the luminance layer.  Final Image size is approximately 2800 x 2100.

North is up in this image. In this image the Sharpless 235 is the small bright emission roughly central in the image. The large dominating emission nebula toward the upper right is Sharpless 232. in the visual center of this object  is a small planetary nebula G137.5+03.2 it is barely detectable in this image. Also in Sharpless 232 toward its upper region is a dark nebula known as LDN 1523. Two other emission nebulae are Sharpless 231 and 233. Sharpless 235 aslo have parts A, B, and C trailing off just below. These emission nebulae also have LBN designations. These objects  as well as some of the brighter stars  are identified in the annotated image.  This image replaces an earlier image that can be seen in the Archives here Horizontal FOV is 120'

Image center is approximately - Equatorial 2000: RA: 05h 40m 53s Dec: +3602'48"

 

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