NGC 4151 (UGC 7166, PGC 38739 and at least 50 other designations according to SIMBAD) is a Seyfert 1 (https://en.wikipedia...eyfert_galaxies) galaxy with a bright core and faint arms. While papers show varying distance estimates, the newest is approximately 60 million light-years away in Canes Venatici.
NGC 4156 (UGC 7173, PGC 38773 and others) is the delicate face-on spiral above and to the left (east) of NGC 4151. Estimates put this one at approximately 321 million light-years away.
UGC 7188 (PGC 38811 and others) is the odd spiral to the left of NGC 4151.
Luminance – 29x600s – 290 minutes – binned 1x1
RGB – 12:8:12x300s – 60:40:60 minutes each – binned 2x2
450 minutes total exposure – 7 hours 30 minutes
Imaged January 11th, 12th and 15th, 2021 and January 1st, 2021 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.c...691488/sizes/l/
See the link above because the attached image has been down-sampled.