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NGC 2655, Arp 225 in Camelopardalis

 

CLICK ON IMAGE FOR FULL SIZE VIEW (4000x3000)

Scope: Explore Scientific MN152 at f/4.8, Location: DAA Observatory, Shelter Valley, CA,   6 February 2021  Camera: ASI1600M (Astronomik Gen 2  LRGB Filters)

Exposure:  32 x 6 min(1x1 bin, gain 139) Luminance exposures, 16 x 4 min (1x1 bin, gain 139) 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.  RGB combine, Luminance layering - PixInsight. Final finishing - Affinity Photo. RGB photometric calibration - PixInsight.  This image is a RGB combine with Luminance layering. Luminance channel was an integration of the Luminance and RGB stacks for a Pseudo synthetic Luminance channel construction. L:R:G:B channels were weighted  at  3:1:1:1 weights respectively. Images processed at 4656 x 3520 resolution. Final Image size is approximately 4000x3000.

North is up in this image. The galaxy NGC 2655, SAB(s)0/a - also known as Arp 225 is center right. A nearby partner is galaxy LEDA 3085822. Both of these are about 65 to 70 million light years distant.  Also in this distance range are NGC 2715, SAB(rs)c; UGC 04701; and UGC 04714.  Galaxy UGC 04711 is a little more distant at 153 million light years. A pair of  more distant irregular galaxies, UGC 04563 and 04566 are about 167 million light years distant. Also  Abell 719 - a cluster of distant galaxies is visible in the image. It has a redshift of 0.24580 with a light travel time of 2.896 billion light years. There are several background galaxies from the PGC catalog as well.  These objects and some of the brighter stars are identified in the annotated image. Horizontal FOV is about 83'.  Full size image scale is 1.25 arcsec/pix.

Image center is approximately - Equatorial 2000: RA: 08h 58m 16s Dec: +78 14' 23" 

 

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