Arp 56

Dan Crowson

Arp 56 consists of UGC 1432 (PGC 7359, VV 12 and others) the larger spiral interacting with PGC 212878. In Arp’s, “Spiral galaxies with companions on arms – high surface brightness companions” class, these are located approximately 350 million light-years away in Aries.


Luminance – 24x600s – 240 minutes – binned 1x1

RGB – 8x300s – 40 minutes each – binned 2x2


360 minutes total exposure – 6 hours


Imaged September 27th and 29th, 2019 from Dark Sky New Mexico at Rancho Hidalgo (Animas, New Mexico) with a SBIG STF-8300M on an Astro-Tech AT12RCT at f/8 2432mm.




Dan Crowson                          dcrowson@...
Dardenne Prairie MO     


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