Arp 330 consists of six galaxies in the ‘Galaxy chains’ class. These galaxies (north to south) include:
MCG+09-27-095 (Shk 16-4)
MCG+09-27-096 (Shk 16-5)
MCG+09-27-094 (Shk 16-1)
MCG+09-27-092 (Shk 16-3)
MCG+09-27-093 (Shk 16-8)
MCG+09-27-091 (Shk 16-2)
(Shk = Shakhbazian)
Others that should have be included are:
2MASX J16491727+5327127 (Shk 16-7) - above the first galaxy
Shk 16-13 – between 16-4 and 16-5
2MASX J16491583+5325286 (Shk 16-12) – right (east) of the others, closer to the star
PGC 2439822 – between Shk 16-8 and 16-2
Shk 16-14, 16-6 and 16-15 below the chain
UGC 10853 is the barred spiral at the top left
Luminance – 34x600s – 340 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2
460 minutes total exposure – 7 hours 40 minutes
Imaged May 28th, 29th and 30th, 2019 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/48154984742/sizes/l