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LBN 603, LDN 1295 and LDN 1296



Scope: FSQ-106N at f/5, Location: DAA Observatory, Shelter Valley, CA,   17 October 2020  Camera: ASI1600M (Astronomik Gen 2   LRGB Filters)

Exposure:  32 x 6 min (1x1 bin, gain 200) Luminance exposures, 20 x 3.5 min (1x1 bin, gain 124) each - RGB exposures.

Processing: Data Collection - Sequence Generator Pro (as FITs). Sub frame calibration - Pixinsight. Sub frame registration and integration (Average combine - Winsorized Sigma Clipping) - PixInsight. Non-linear stretching, normalization and gradient removal - PixInsight.  Generation of starless nebulosity images (Luminance) - starnet++. RGB combine, Luminance layering - PixInsight. Stars and Starless Luminance combine - PixInsight. Final finishing - Affinity Photo. RGB photometric calibration - PixInsight.  Annotation - PixInsight, Aladin (Simbad and NED), and Affinity Photo.  The starless mix  was then combined with an RGB stars-only with pixel math. Images processed at 4656 x 3520 resolution. Final Image size is approximately 3600x2700.

North is up in this image. This field encompasses most of the LBN 603 structure - a large blue/red nebula from Lynds catalog.  It is in the faintest LBN class. There are two embedded dark nebulae LDN 1295  and LDN 1296. Also embedded are two dark nebulae from the TGU catalog - TGU H809  and TGU H807. There are several molecular clouds in this field, the most visible is PGCC G121.04-09.96.  There are a few background galaxies in this image - five are visible. They range from 291 to 1,076 million light years  distant.  These objects and some of the brighter stars are identified in the annotated image. This image replaces an earlier image  that can be seen in the Archives hereHorizontal FOV is about 115.  Full size image scale is  about 1.92 arcsec/pix. 

Image center is approximately - Equatorial 2000: RA: 00h 44m 07s Dec: +52 22' 52" 


All images and content remain the property of Jim Thommes - copyright 2003 - 2021

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