M85 (NGC 4382, UGC 7508 and many others) is a lenticular or elliptical galaxy located approximately 51.7 million light-years away in Coma Berenices.
NGC 4394 (UGC 7523 and others) is the barred spiral to the left (east) of M85. NGC 4394 along with the small elliptical MCG+03-32-028 (below M85) are all interacting.
Luminance – 26x600s – 260 minutes – binned 1x1
RGB – 10:8:10x300s – 50:40:50 minutes each – binned 2x2
400 minutes total exposure – 6 hours 40 minutes
Imaged February 27th and March 28th and 31st, 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.
LRGB - https://www.flickr.com/photos/dcrowson/40629885053/sizes/l