Sh2-120 is a small emission nebula located approximately 20,500 light-years away in Cygnus.
Ha – 18x1800s – 540 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2
660 minutes total exposure – 11 hours
Imaged over six nights in August and September, 2016 from Animas, New Mexico with a SBIG STF-8300M on an Astro-Tech AT12RCT at f/8 2432mm.
HaRGB - https://www.flickr.com/photos/dcrowson/29775002060/sizes/l