Sharpless 158 (NGC 7538) is a bright nebula located approximately 8,800 light-years away in Cepheus.
Ha – 24x1800s – 720 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2
840 minutes total exposure – 14 hours
Imaged over six nights in 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/30041036126/sizes/l