Berkeley 102, just above and to the right of center, is a trumpler (https://en.wikipedia.org/wiki/Trumpler_classification) class II 1 p open cluster located approximately 8,500 light-years away in Cassiopeia. There’s a
Luminance – 24x300s – binned 1x1 – 120 minutes
RGB – 8x180s – 24 minutes each – binned 2x2
182 minutes total exposure – 3 hours 2 minutes
Imaged October 24th and 26th and November 9th, 10th and 11th, 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.com/photos/dcrowson/51690387714/sizes/l/