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LBN 418 Region in Pegasus



Scope: Explore Scientific MN152 at f/4.8, Location: DAA Observatory, Shelter Valley, CA, 5 and 13 May 2021  Camera: ASI1600M (Astronomik Gen 2  LRGB Filters)

Exposure: Exposure: L - 66 x 4 minutes (gain-180 1x1) ,  RGB - 24 each x 4 minutes  (gain-120 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. Non-linear stretching, normalization and gradient removal - PixInsight. Generation of starless nebulosity image (Luminance) - Star XTerrminator  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. The monochrome starless was combined with a full monochrome image (two stops down in stretch) to minimize star bloat (using pixel math). Image processed at 4656x3520 resolution. Final Image size is approximately  4000x3025.

North is up in this image.  This image captures a cloudy region in the much larger LBN 418 nebula. This image field captures only a small portion of LBN418 and lies on the western leg of the "Great Square of Pegasus" (between stars Scheat and Markab) . The field contains many background galaxies hiding behind some thin Milky Way clouds.  Notable galaxies are IC 5282, UGC 12326, LEDA 70392, 1666904, 1667599, 1671850. There are notable dense cores and molecular clouds from the PGCC catalog. There are also a number of visible Quasars that range in redshift from 0.200 to 2.142 (2.48 to 10.62 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 42s Dec: 22 21 30"



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