Sharpless 207 (LBN 708, Simeis 28 and others) is a small emission nebula located approximately 11,100 light-years away in Camelopadalis. This one surrounds open cluster Mayer 2.
Sharpless 208 (open cluster Waterloo 1, also part of LBN 708 and others) is the smaller nebula below Sh2-207. It is located approximately 24,800 light-years away.
Ha – 32x1800s – 960 minutes – binned 1x1
Luminance – 24x600s – 240 minutes – binned 1x1
RGB – 10:8:10x300s – 50:40:50 minutes each – binned 2x2
1340 minutes total exposure – 22 hours 20 minutes
Imaged over ten nights in October, 2018, December 2019 and January and February, 2020 from Animas, New Mexico with a SBIG STF-8300M on an Astro-Tech AT12RCT at f/8 2432mm.
LRGB - https://www.flickr.com/photos/dcrowson/50741445281/sizes/l/
HaRGB - https://www.flickr.com/photos/dcrowson/50741445636/sizes/l/
HaRGB refractor image from 2014 - https://www.flickr.com/photos/dcrowson/13341157314/