Berkeley 54 is a Trumpler class I 3 m open cluster located approximately 12,100 light-years away in Cygnus.
Luminance – 27x300s – binned 1x1 – 135 minutes
RGB – 10:8:10x180s – 30:24:30 minutes each – binned 2x2
219 minutes total exposure – 3 hours 39 minutes
Imaged June 24th and 25th, 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/48138369212/sizes/l