Arp 287 consists of NGC 2735 (UGC 4744, PGC 25399, VV 40a and others) the spiral at the center interacting with NGC 2735A (MCG+04-22-003, PGC 25402, VV 40b and others) just to the left (east) of center. Part of Arp’s Double Galaxies – Wind Effects, these are located approximately 178 million (http://simbad.u-strasbg.fr/simbad/sim-ref?bibcode=2016AJ....152...50T) light-years away in Cancer.
Luminance – 24x600s – 240 minutes – binned 1x1
RGB – 12x300s – 60 minutes each – binned 2x2
420 minutes total exposure – 7 hours
Imaged March 5th, 2018, December 31st, 2019 and January 4th, 2020 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.
LRGB - https://www.flickr.com/photos/dcrowson/49334853798/sizes/l/