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Sharpless 150 and vdB 154

 

 CLICK ON IMAGE FOR FULL SIZE VIEW (2600x1950)

Scope: FSQ-106N at f/5, Location: DAA Observatory, Shelter Valley, CA, 4 September 2018,  Camera: Atik 383L (Astronomik Gen 2 Ha LRGB Filters)

Exposure: Exposure: 12 x 10 min  (1x1 bin) exposure with UV/IR block, 16 x 10 minutes (2x2 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. Ha-LRGB channel registration, equalization and gradient removal - Astroart.  Curves, Levels, RGB combine - ImagesPlus. Luminance Layering, final stretch, and finishing  - Photoshop.  RGB calibration - eXcalibrator. This image is a  RGB combine with Luminance layering.  Color saturation in LAB color.  The H-Alpha filter exposure was screen blended into the IR/UV Blocking filter exposure stack and used for the luminance layer. Ha was screen blended into the Red channel for Ha highlights in Photoshop. Images processed at 3352 x 2532 resolution. Final Image size is approximately  2600 x 1950.

North is up in this image.  The  red emission nebula in the center is Sharpless 150 - it is also known as LBN 520.  Sharpless 150  is ionized by two stars - HD 213087 and HD 213405 - the largest bright blue stars on the right.  The faint blue reflection nebula above Sharpless 150 is vdB154 (also known as LBN 523). Another Sharpless object (Sh2-145) is partially in this field in the lower right. There are several dark nebulae in this field - LDB 1206, 1207, 1208, 1209, 1214. There is a small galactic nebula (RNO 142) just to the right of Sharpless 150.  These objects  and some of the brighter stars are identified in the annotated image.  Horizontal FOV is approximately 120 arc minutes. Full size image scale is 2.77 arcsec/pix.

Image center is approximately - Equatorial 2000: RA: 22h 31m 11s Dec: +6506'51"

 

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