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NGC 7023 and Sharpless 136



Scope: FSQ-106N at f/5, Location: Laguna Mountains, CA   21 June 2014  Camera: Atik 383L

Exposure: Exposure: 16 x 9 min  (1x1 bin) exposure with UV/IR block,  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 Images Plus. Luminance layering and finishing  - Photoshop. This image is a  LRGB combine with Luminance layering.  Color saturation in LAB color;    Final Image size is approximately 3200 x 2400.

North is up in this image. This field is the NGC 7023 Region in the constellation of Cepheus. NGC 7023 (also known as Cederblad 187 and commonly known as the Iris Nebula) is the dominant blue reflection nebula in the image. Surrounding NGC 7023  are dark dust clogged dark nebulae cataloged as LDN 1170, LDN 1172, and LDN 1174. The smaller nebula on the left edge of this image is Sharpless 136. This is sometimes called the "Ghost" nebula because of the two horned figures hanging below the nebula - these are better seen in the full size image.  All of these objects are identified in the  annotated image.  NGC 7023 is about 1,400 light years distant from Earth; Sharpless 136 is about 1,200 light years distant from Earth. Horizontal FOV is 120'.

Image center is approximately - Equatorial 2000: RA: 21h 08m 10.0s Dec: +6813'48"


All images and content remain the property of Jim Thommes - copyright 2003 - 2014

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