LBN 418 Region in Pegasus
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CLICK ON IMAGE FOR FULL SIZE VIEW (4000x3025) 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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