TheSkySearchers

Berkeley 33 (Ruprecht 7) is a trumpler (https://en.wikipedia.org/wiki/Trumpler_classification) class III 2 m open cluster approximately 18,750 light-years away in Canis Major.

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

182 minutes total exposure – 3 hours 2 minutes

Imaged February 12th, 13th and 14th, 2024 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/ ... 9/sizes/l/

See my full Berkeley Open Clusters album here - https://www.flickr.com/photos/dcrowson/ ... 466876833/.



Dan

This is very cool, as is your Open Cluster album.