Arp 113 consists of NGC 67 through NGC 72 at the center of this image. This grouping is in Arp’s ‘E and E-like Galaxies - Close To and Perturbing Spirals’ class. The spiral at the top is NGC 70 (UGC 174, VV 166a and others) and the one at the bottom is NGC 72 (UGC 176, VV 166d and others).
Some of the other larger galaxies include:
UGC 166 (PGC 1154) – spiral at the top right
PGC 1163 – the galaxy in the star spike below UGC 166
NGC 74 – the spiral to the left (east) of Arp 113
Luminance – 24x600s – 240 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2
360 minutes total exposure – 6 hours
Imaged October 10th and 14th, 2018 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/31558111478/sizes/l