LBN 587 is a mid-brightness (3 out of 6) emission nebula located in Cepheus. It appears to be a brighter portion of the much larger Sharpless 171.
Luminance – 18x600s – 180 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2
300 minutes total exposure – 5 hours
Imaged from Dardenne Prairie, Missouri (a red zone) on October 21st, 2016 with a SBIG ST-8300M on an Astro-Tech AT90DT at f/6.7 603mm.
LRGB - https://www.flickr.com/photos/dcrowson/30195202400/sizes/l