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LBN 923 Region and vdB33



Scope: FSQ-106N at f/5, Location: DAA Observatory, Shelter Valley, CA, 2 and 10 January 2019,  Camera: Atik 383L (Astronomik Gen 2  LRGB Filters)

Exposure: Exposure: 24 x 15min  (1x1 bin) exposure with UV/IR block filter,  8 x 4.5 min (2x2 bin) each RGB exposures.

Processing: Data Collection -  Sequence Generator Pro (as FITs).  Exposure calibration, LRGB registration, and stacking (Median combine -  Winsorized Sigma Clipping) - PixInsight.  LRGB channel registration, equalization and gradient removal - PixInsight.  Curves, Levels, RGB combine, Luminance layering - PixInsight. Final finishing and minor color tweaking  - Photoshop.  RGB calibration - eXcalibrator. This image is a  RGB combine with Luminance layering.  Images processed at 3354 x 2529 resolution. Final full image size is approximately  2800 x 2100.

North is left in this image.  The large cloudy nebulosity in this image field is part bright nebula and part various dark nebula. This field is the LBN 923 region. LBN 923 is the dusty nebulosity throughout this field.  The most prominent bright nebula is the bluish reflection Nebula in the lower left - it is vdB 33 (AKA NGC 1788, LBN 916).  The field also contains  the dark nebulae LDN 1615 and LDN 1616 as well as several molecular clouds from the Plank Galactic Cold Clump catalog (PGCC). There are a surprising number of background galaxies in this field - the annotated images shows only a few (NGC 1740, 1753, PGC 16636 and others). These objects  and some of the brighter stars are identified in the annotated image.  This image replaces an earlier image in the archives here. Horizontal FOV is approximately 120 arc minutes. Full size image scale is 2.57 arcsec/pix.

Image center is approximately - Equatorial 2000: RA: 05h 06m 29s Dec: -0321'03"


All images and content remain the property of Jim Thommes - copyright 2003 - 2019

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