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Sh2-113 and Sh2-114 - Flying Dragon



Scope: FSQ-106N at f/5, Location: DAA Observatory, Shelter Valley, CA; 10, 12, and 16 August, 2023,  Camera: ASI2600MM (Astronomik type 2c RGB, 6 nm Ha filters)

Exposure: Exposure: Ha - 130 x 5 min (gain-140 1x1),   RGB - 40 x 2 min (gain-101 1x1) each RGB exposures.

Processing: Data Collection -  N.I.N.A. Sequencer (as FITs).  Sub-frame calibration - Pixinsight (WBPP). Sub-frame  registration and integration (Average combine -  Winsorized sigma clipping) - PixInsight (WBPP).  Mure Denoise - PixInsight. Non-linear stretching, normalization and gradient removal - PixInsight. Photometric RGB calibration (SPCC) - PixInsight. Deconvolution of Ha and RGB- BlurXTerminator. Generation of starless nebulosity Ha  image for later processing - Star XTerminator.  Curves, Levels, RGB combine, Range Compression - PixInsight.  RGB Stars and Ha  combine - PixInsight.   Final finishing  - Affinity Photo.   Annotation - PixInsight, Aladin (Simbad and NED), and Affinity Photo. This image is a  Ha  Narrow Band starless image (modified Ha mapping)  starless composition - with RGB stars added.  Image processed at 6248x4176 resolution. Final Image size is approximately  6193x4078.

The above image is a landscape crop of the full size image (north to the right).  This image shows the region centered about Sh2-114 and Sh2-113 (also known as LBN 347 and LBN 333 respectively).  This  region has nebulous structures almost exclusively in the Hydrogen-Alpha emission line. LBN 346 is also prominent in the upper part of this field. The Hydrogen-Alpha nebulosity is predominant in this image, but there  are some smaller or background objects  that show through these emission structures. Galaxies UGC 11726 and 2MFGC 16150 are very small and can only be seen in the full size or annotated image - they are 340 and 341 million light years distant (respectively). There is also the planetary nebula Kronberger 26 (distance 7,324 light years by parallax measurement). It is seen in this image in only Hydrogen-Alpha emission (the only emission line filter used in this image).   These objects and some of the brighter stars are identified in the annotated image 

Image center is approximately - Equatorial 2000: RA: 21h 21m 26s Dec: +3835'21"


All images and content remain the property of Jim Thommes - copyright 2003 - 2023

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