NGC 507 Galaxy Group

MOUSEOVER IMAGE FOR STARLESS VIEW

CLICK ON IMAGE FOR FULL SIZE VIEW (6448x4391)

Scope: Celestron 9.25 Edge HD 235 mm at f/7; Location: DAA Observatory, Shelter Valley, CA;  Dates:  8, 15 September, 8, 13 October 2023; Camera: ASI294MM (Baader  L, RGB Filters)

Exposure:   Lum 112 x 3. minutes (gain-121 2x2), RGB - 40 each x 2 minutes  - (gain-121 2x2).

Processing: Data Collection -  N.I.N.A. (as FITs).  Sub-frame calibration - Pixinsight (WBPP). Sub-frame  registration and integration (Average combine -  Winsorized sigma clipping,  2X drizzle for  Lum) - PixInsight (WBPP).  NoiseXTerminator (RGB, Lum) - PixInsight.  Non-linear stretching for Lum - PixInsight.    RGB combine and stretching, Photometric RGB calibration (SPCC)  - PixInsight. De-convolution - BlurXTerminator (AI4) - PixInsight. Generation of starless  Lum and RGB image for later processing - StarXTerminator  (PixInsight.)    Lum stars (lower stretch) screened into Lum starless  for star size control - PixInsight.  Luminance  construction layered onto RGB - Pixinsight. Final finishing  - Affinity Photo.  Annotation - PixInsight, Aladin (Simbad), and Affinity Photo. This image is a RGB image with Luminance Layering.  Image processed at 8288x5644 resolution (2x drizzle stacks). Full Field image size is approximately 6448x4391.

North is up in this image. This is a close up image of the informally 'named' NGC 507 Galaxy Group.   NGC 507 is the brightest and largest galaxy in this image. This image shows most of the formally cataloged galaxy cluster [TKK2018] 477 (Temple Kruuse, Kipper - 2018).  There are three "compact galaxy groups" -  NGC 515, 517  (top left); NGC 495, 496, 498, 499, 501 (top center); NGC 494, 503, 504, 507, 508 (lower center).  These galaxies are in the range of 180 to 260  million light years (by redshift estimate). The image field is rich in galaxies  at this distance and in further background galaxies - this can be seen in the mouseover starless image.  

Also in the image are multiple Quasars. They range from  7.95 to 11.28 billion years of light travel time (Lookback). The furthest Quasar at 11.28 billion years of light travel time has a redshift of 2.698  These objects, information, and some of the brighter stars are identified in the annotated image.   The Horizontal Full FOV is approximately 0.668 degrees. Full size image scale is approximately 0.373 arcsec/pix.

Image Center approximately - Equatorial 2000: RA: 01h 23m 22s Dec: +33°21'00"

All images and content remain the property of Jim Thommes - copyright 2003 - 2024

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