Sharpless 140 is an emission nebula located approximately 2,900 light years away in Cepheus.
Ha – 21x1800s – 630 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2
750 minutes total exposure – 12 hours 30 minutes
Imaged from Dardenne Prairie, Missouri (a red zone) on August 19th and September 5th and 6th, 2017 with a SBIG ST-8300M on an Astro-Tech AT90EDT at f/6.7 603mm.
HaRGB - https://www.flickr.com/photos/dcrowson/37036821090/sizes/l