Sharpless 247 (LBN 843 and others) is a HII region located approximately 6,500 light-years away in Gemini.
Luminance – 32x600s – 320 minutes – binned 1x1
RGB – 12x300s – 60 minutes each – binned 2x2
500 minutes total exposure – 8 hours 20 minutes
Imaged November 25th and 26th, 2017 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/24076104047/sizes/l