Arp galaxies can be big, small or anywhere in-between and come in all shapes and sizes. Some are common and some are not. Arp 145 seems to fit the "not very common" category. And with good reason. Less than 2' in size and a very bright star nearby can make this difficult. I have seen other pics of Arp 145 but 145 was more of an afterthought. This pic is by no mean spectacular but it does focus only on Arp 145.
Arp 145 is an odd one. Arp 145 is listed as "Material emanating from elliptical", do you see that?
Anyway, I'll add this Arp to my "capture" list. On to the next small Arp.
Taken with a C11 at f/11.3 riding on a MI-250 using a ST-8XME. Six, 10 min subs.
Gotta have some focal length to bring these small Arp's in!