van den Bergh 136 (HD 196819, HIP 101841, part of the Diamond Ring Cluster and others) is an unusual gold reflection nebula located in Cygnus.
Luminance – 24x600s – 240 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2
360 minutes total exposure – 6 hours
Imaged September 19th and 20th, 2017 from Dark Sky New Mexico at Rancho Hidalgo (Animas, New Mexico) with a SBIG STF-8300M on an Astro-Tech AT12RCT at f/8 2432mm.
LRGB - https://www.flickr.com/photos/dcrowson/37200408942/sizes/l
Also see my wide field image taken several years ago here - http://www.flickr.com/photos/dcrowson/10710566206/sizes/l/.