Sharpless 2-81 (LBN 160) is one of Sharpless’ mistakes. This very faint dust nebula doesn’t contain any hydrogen alpha. Sh 2-81 is located approximately 6,500 light-years away in Aquila. Sh 2-81 is the dust just to the right of the center of the image.
Asteroid 849 can be also be found at the bottom left.
Luminance – 12x600s – 120 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2
240 minutes total exposure – 4 hours
Imaged August 12th, 2015 at the Danville Conservation Area (New Florence, Missouri) with a SBIG ST-8300M on an Astro-Tech AT90EDT at f/6.7 603mm.
LRGB - https://www.flickr.com/photos/dcrowson/20665150495/sizes/l