Arp 152 is one of the most famous Arp galaxies and often in the news. Here's a link to such a current news item. http://www.universetoday.com/2009/07/02/messier-87-shows-off-for-hundreds-of-earth-bound-astronomers/ It has one of the universe's largest fireworks going off in its core, powered by a giant black hole. This creates a jet. It is the jet that put it in Arp's catalog of course. While we only think of M87 when galactic jets are mentioned Arp has 4 of them in his catalog. Two were well placed this spring and I hoped to image them along with M87 but thanks to the perpetual clouds this didn't happen. I've attached 2 different processing version of this one image; one processed normally except the core has been reduced to show the jet, the other a closeup 2x enlargement of the core and jet region processed just for the jet.
I've also included an annotated image.

M87 is one of the anchor galaxies of the Virgo cluster. Its mass along with that of a couple other supermassive elliptical galaxies seem to define the center of this cluster. One of these M49 is involved with Arp 134. I've reduced the brightness of M87 considerably to allow the jet to be seen. Many of the star-like points around and within the galaxy that make it appear to be in a faint star cluster are really some of its many globular star clusters. There were just too many to try and include them in the annotated image. But virtually all fuzzy stars around and in it are listed at NED as star clusters. Unfortunately, they list both open and globular clusters the same. I think it safe to assume these are all globular clusters.

M 87 was discovered by Johann Koehler on May 5, 1779. Messier didn't hear of the discovery and found it himself on March 18, 1781.

Arp's image:
http://ned.ipac.caltech.edu/level5/Arp/Figures/big_arp152.jpeg

14" LX200R @ f/10, L=4x10' RGB=2x10', STL-11000XM, Paramount ME