LBN 189 is a dim nebula (4 out of a 1-6 scale where 1 is the brightest) located above the Crescent Nebula (NGC 6888) in Cygnus.
Ha – 13x1800s – 390 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2
510 minutes total exposure – 8 hours 30 minutes
Imaged from Dardenne Prairie, Missouri on July 30th and August 20th, 2015 with a SBIG ST-8300M on an Astro-Tech AT90EDT at f/6.7 603mm.
HaRGB - https://www.flickr.com/photos/dcrowson/21837178658/sizes/l