Barnard 352 (LDN 940, LDN 941 and others), the larger dark area near the top, is a large dark nebula located just above the North America and Pelican nebulae in Cygnus.
Barnard 353 is the smaller dark nebula in the center.
Ha – 24x1800s – 720 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2
840 minutes total exposure – 14 hours
Imaged from Dardenne Prairie, Missouri (a red zone) on September 13th, 14th and 17th, 2022 and at the Danville Conservation Area (New Florence, Missouri) on September 25th, 2022 with a SBIG ST-8300M on an Astro-Tech AT90DT at f/6.7 603mm.
HaRGB - https://www.flickr.com/photos/dcrowson/52397174421/sizes/l/
See my previous broadband image without the Ha here - https://www.flickr.com/photos/dcrowson/23038021609