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SH2-112 in Cygnus



Scope: Explore Scientific MN152 at f/4.8 Location: DAA Observatory, Shelter Valley - 24 August 1029 and Tierra Del Sol - SDAA Club Site, CA - 28 August 2019, Camera: Atik 383L (Astronomik Gen 2  Ha OIII LRGB Filters)

Exposure: 12 x 8 min  (1x1 bin)  UV/IR block Lum filter, 16 x 10 min (2x2 bin) Ha filter, 16 x 12 min (2x2 bin) OIII  filter, 8 x 4 min (2x2 bin) each RGB filters.

Processing: Data Collection -  Sequence Generator Pro (as FITs).  Subframe calibration and registration - PixInsight. Subframe integration (Median combine -  Winsorized Sigma Clipping) - PixInsight.  Non-linear stretching, normalization and gradient removal - PixInsight.  Generation of starless nebulosity images - starnet++.  Starless color mapping and LRGB stars color mapping - PixInsight. Stars and Starless combine - PixInsight. Final finishing  - Photoshop.  RGB calibration - eXcalibrator. Annotation - PixInsight, Aladin (Simbad and NED), and PhotoShop. This image is a  modified HOO narrow band mapping with RGB stars.  Images processed at 3354 x 2529 resolution. Final Image size is approximately  2800 x 2100.

North is up in this image.  This image field is the Sharpless 2-112 Region - it is pretty much central to the larger Cygnus Region. Sharpless 2-112 is the bright nebula in the upper portion of this image. Sharpless 2-112 is loosely also known as Cederblad 181, LBN 337, and DWB 174. The smaller and somewhat separate structure in the upper right of Sharpless 2-112 is DWB 175 . Emission regions of LBN 330 and DWB 169 are in the lower part of this image. Some of the dark nebulae from the Dobashi and LBN catalogs are seen in this image field.  These object and some of the brighter stars are seen in the annotated image. This image replaces an earlier image in the archives here.  The Vertical FOV is  approximately 88arc minutes. Image scale of the full size image is 1.88 arc seconds per pixel.

Image center is located approximately - Equatorial 2000: RA: 20h 34m 00.8s Dec: +4516'31"


All images and content remain the property of Jim Thommes - copyright 2003 - 2019

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