Berkeley 55

Posted by dcrowson
on Friday, June 24, 2022
Berkeley 55 is a trumpler (https://en.wikipedia.org/wiki/Trumpler_classification) class III 2 p open cluster approximately 5545 light-years away in Cygnus.

Luminance – 24x300s – binned 1x1 – 120 minutes
RGB – 8x180s – 24 minutes each – binned 2x2

182 minutes total exposure – 3 hours 2 minutes

Imaged September 9th, 10th and 12th, 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/52170994476/sizes/l/
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