Sh2-113 and Sh2-114 - Flying Dragon
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ON IMAGE FOR FULL SIZE VIEW (6193x4078)
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: +38°35'21"
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