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Molecular Clouds in Lacerta



Scope: FSQ-106N at f/5, Location: DAA Observatory, Shelter Valley, CA, 10 September 2018,  Camera: Atik 383L (Astronomik Gen 2 Ha LRGB Filters)

Exposure: Exposure: 16 x 15min  (1x1 bin) exposure with UV/IR block filter,  8 x 4.5 min (2x2 bin) 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  - Photoshop.  RGB calibration - eXcalibrator. This image is a  RGB combine with Luminance layering.  Images processed at 3352 x 2532 resolution. Final Image size is approximately  2600 x 1950.

North is up in this image.  The main feature of this image field is the series of molecular clouds from lower left to upper right. These clouds are cataloged in the Planck Catalog of Galactic Cold Clumps (PGCC), but they are not in any of the well known Astronomical catalogs. Also in the field is a significant number of background galaxies - some of them are visible through the molecular clouds. One of these galaxies is from the NGC catalog (NGC 7223). Many of these  background galaxies are members of galaxy groups. The two galaxy groups in this field are [CHM2007] HDC 1179 (total of 10 members) and [CHM2007] LDC 1503 (total of 18 members, some out of the field of this image). These objects  and some of the brighter stars are identified in the annotated image.  Horizontal FOV is approximately 120 arc minutes. Full size image scale is 2.77 arcsec/pix.

Image center is approximately - Equatorial 2000: RA: 22h 09m 51s Dec: +4133'30"


All images and content remain the property of Jim Thommes - copyright 2003 - 2018

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