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Sharpless 154 and vdB 155 in Cepheus



Scope: FSQ-106N at f/5, Location: Laguna Mountains, CA   19 September 2014  Camera: Atik 383L

Exposure: Exposure: 6 x 8 min  (1x1 bin)  Luminance exposure with IR/UV blocking filter and 17 x 8 min (2x2 bin) exposure with Hydrogen Alpha filter, 8 x 4 min (2x2 bin) RGB exposures.

Processing: Data Collection -  Artemis Capture (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  HaL- RGB combine with Luminance layering.  Color saturation in LAB color; H-Alpha and Luminance exposure stacks were used for the luminance layer.   Processing was in up-sampled  data (to simulate 1x1 bin). Final Image size is approximately 2600 x 1950.

North is to the right in this image. In this image, Sharpless 154 (also known as  LBN 521 is the dominant emission  nebula in the left side of the image.  In the upper left  corner is the open cluster NGC 7419; in the upper right corner is a small portion of Sharpless 155 - also known as the "Cave Nebula". Between Sharpless 154 and 155 is the blue reflection nebula vdB 155 also known as LBN 524. There are dark regions on the left and right in this image field. These dark nebulae are cataloged in the LDN, TGU and Dobashi catalogs. These objects  as well as some of the brighter stars are identified in the annotated image.   Horizontal FOV is 120'

Image center is approximately - Equatorial 2000: RA: 22h 49m 23s Dec: +6135'38"


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