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Abell 1060 Galaxy Cluster and Hickson 48

 

CLICK ON IMAGE FOR FULL SIZE VIEW (3200x2400)

Scope: Explore Scientific MN152 Maksutov Newtonian at f/4.8, Location: DAA Observatory, Shelter Valley, CA, 3 March 2020,   Camera: ST8300M (Baader  LRGB filters)

Exposure: Exposure: 16 x 10 min  (1x1 bin) exposure with UV/IR block filter,  10 x 4.5 min (2x2 bin) 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.  Curves, Levels, RGB combine, Luminance layering - PixInsight.  Final finishing  - Affinity Photo.  RGB calibration - PixInsight. Annotation - PixInsight, Aladin (Simbad and NED), and Affinity Photo. This is a RGB image with luminance layering.  The Luminance stretching on stars was light to minimize star bloat; galaxies had a heavier stretch. The heavier stretched galaxies were merged with the lightly stretched stars.. The resulting image was used as luminance for the  image consisting of the RGB data. Images processed at 3352 x 2532 resolution. Final Image size is approximately  3200x2400.

North is up in this image.  Its full extent isn't quit covered in this image. The Hydra Cluster is part of the very large Laniakea Supercluster. ACO 1060 has about 187 probable members ranging in distance from 153 to 193 million light years. Many of the smaller galaxies in this image are part of the Hydra Cluster. Also in this image is the Hickson Compact Galaxy group - HCG 48. This Hickson group has four members, three of which (IC 2597, LEDA 31580, LEDA 31577) are also members of ACO 1060.  There are a few Quasars that are visible in this image - two of which have relatively large redshifts of 2.2300 and 2.1680 (BW79 16 and BW79 19, respectively). These objects and some of the brighter stars and galaxies are identified in the annotated image.  Vertical FOV is approximately 88 arc minutes. Full size image scale is 1.65 arcsec/pix.

Image center is approximately - Equatorial 2000: RA: 10h 36m 35s Dec: -2731'06"

 

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