Sharpless 204 (LBN 689 and others) is an emission nebula located approximately 12,500 light-years away in Camelopardalis.
There’s a small open cluster in the bottom left quadrant designated as Alicante 1.
Ha – 18x1800s – 540 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2
660 minutes total exposure – 11 hours
Imaged from Dardenne Prairie, Missouri (a red zone) on September 19th, 20th, 21st, 23rd and November 8th, 2017 with a SBIG ST-8300M on an Astro-Tech AT90EDT at f/6.7 603mm.
HaRGB - https://www.flickr.com/photos/dcrowson/29163690607/sizes/l