NGC 3733 (UGC 6554, PGC 35797, VV 449 and others) is an intermediate spiral located approximately 71 million light-years away in Ursa Major.
Most of the galaxies to the left of NGC 3733 are part of Abell 1318, a cluster of approximately 56 galaxies.
Luminance – 24x600s – 240 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2
360 minutes total exposure – 6 hours
Imaged March 24th, 26th, 29th and 30th, 2022 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/52043420546/sizes/l/
LRGB annotated - https://www.flickr.com/photos/dcrowson/52042375887/sizes/l/