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NGC 7479 and Molecular Clouds in Pegasus



Scope: Explore Scientific MN152 at f/4.8, Location: DAA Observatory, Shelter Valley, CA, 2 and 4 September 2021  Camera: ASI1600M (Astronomik Gen 2  LRGB Filters)

Exposure: Exposure: L - 64 x 6 minutes (gain-180 1x1) ,  RGB - 20 each x 3.5 minutes  - ( gain-100 1x1).

Processing: Data Collection -  Sequence Generator Pro (as FITs).  Sub-frame calibration - Pixinsight. Sub-frame  registration and integration (Average combine -  Winsorized Sigma Clipping) - PixInsight.  Mure Denoise - PixInsight. Starless generation of starless image  (prior to recombination with stars) - PixInsight/Star XTerminator. Non-linear stretching, normalization and gradient removal - PixInsight.   Curves, Levels, RGB combine, Luminance layering - PixInsight.  Final finishing  - Affinity Photo.  Photometric RGB calibration - PixInsight. Annotation - PixInsight, Aladin (Simbad and NED), and Affinity Photo. This image is a  LRGB with luminance layering.  Image processed at 4656x3520 resolution. Final Image size is approximately  4000x3000.

North is up in this image.  The spiral galaxy in the lower left is NGC 7479 -  a Seyfert type 2 SB(s)c galaxy - sometimes called the "Superman Galaxy". It's distance is comparable by independent estimate (82 million light years) and by redshift estimate (92 million light years). This image also shows the molecular clouds in this region of the sky. Some of their structure is cataloged in the Planck Catalog of Galactic Cold Clumps (PGCC). This field has numerous  background galaxies - a few are visible in this image. Many are obscured by the intervening galactic material from the Milky Way. Some Quasars  are also visible in this image but many are obscured by the galactic material as well. The visible Quasars range from 1.67 to 12.0 billion light years lookback.   These objects, information, background galaxies and some of the brighter stars are identified in the annotated image. Horizontal FOV is approximately 85 arc minutes. Full size image scale is approximately 1.27 arcsec/pix.. 

Image center is approximately - Equatorial 2000: RA: 23h 02m 35s Dec: +12 40' 40"



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