NGC 6926 (UGC 11588, PGC 64939, VV 621 and others) is a Seyfert 2 galaxy (https://en.wikipedia.org/wiki/Seyfert_galaxy#Type_II_Seyfert_galaxies) located approximately 274.5 million light-years away in Aquila. This one should have made Arp’s list.
NGC 6929 (PGC 64949 and others) is the odd galaxy to the left (east) of NGC 6926. At roughly the same distance as NGC 6926, these appear to be part of the same group.
The area seems to have a lot of dust or IFN.
Luminance – 24x600s – 240 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2
360 minutes total exposure – 6 hours
Imaged September 8th, 9th and 10th, 2021 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/51449593245/sizes/l/