NGC 2146 (UGC 3429, PGC 18797, VV 1156 and many others) is a starburst galaxy (https://en.wikipedia.org/wiki/Starburst_galaxy) located approximately 87 million light-years away in Camelopardalis.
Luminance – 27x600s – 270 minutes – binned 1x1
RGB – 14:12:16x300s – 70:60:80 minutes each – binned 2x2
480 minutes total exposure – 8 hours
Imaged November 10th, 11th, 12th and 14th, 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/51623503823/sizes/l/
I captured somewhat recent SN 2018zd in this image - https://www.flickr.com/photos/dcrowson/40347697645/sizes/l/.