Berkeley 25 - LRGB

Berkeley 25 is a trumpler (en.wikipedia.org/wiki/Trumpler_classification) class I 3 p open cluster approximately 25,897 light-years away in Canis Major.

 

Luminance – 25x300s – binned 1x1 – 125 minutes

RGB – 8x180s – 24 minutes each – binned 2x2

 

187 minutes total exposure – 3 hours 7 minutes

 

Imaged November 9th, 10th, 11th and 14th, 2025 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.

 

See my full Berkeley Open Clusters album here - www.flickr.com/photos/dcrowson/albums/72157711466876833/.

 

Done