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NGC 772 in Aries



Scope: Celestron 9.25 Edge 235 mm at f/7, Location: DAA Observatory, Shelter Valley CA,  3 November 2018  Camera: ST8300M (Baader LRGB filters)

Exposure: Exposure:  16 x 12 min (2x2 bin) exposure with IR/UV Block filter, 10 x 4 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 central galaxy in this image is NGC 772. It is classified as a spiral galaxy SA(s)b. There are numerous other galaxies visually close to NGC 772 (NGC 770, LEDA 1577957, 212884, 1573401, and PGC 007509).  Tow of these galaxies are in the vicinity of NGC 772 and are likely interacting (NGC 770, LEDA 1577957). There are many other background galaxies - many of which don't have distance estimates. These galaxies range from 208 to 889 million light years while NGC 772 and its satellite galaxies are at about 100 million light years distant. These galaxies  are identified in the annotated image..  There are also a number of background galaxies in this field not identified in the annotation.   Horizontal FOV is approximately 38 arc minutes (0.81 arcsec/pix image scale on the full size image).

Image center is located approximately - Equatorial 2000: RA: 01h 59m 07s Dec: +1900'27"


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