Messier 72 (M72, NGC 6981 and others) is a Shapley-Sawyer class IX (http://en.wikipedia.org/wiki/Shapley%E2%80%93Sawyer_Concentration_Class) globular cluster located approximately 54,000 light-years away in Aquarius.
Messier 73 (M73, NGC 6994, Collinder 426 and others) is a grouping of four stars on the left side of the image. Originally thought to be an open cluster, these appear to just be an asterism – stars that just appear to be close together.
Luminance – 12x600s – 120 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2
240 minutes total exposure – 4 hours
Imaged on August 19th and 20th, 2020 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/50317882492/sizes/l/