Very nice work, Greg.
This part of the Virgo Cluster is my favourite northern field, as so much is going on in this part of the universe.
Your image shows, very well, the gigantic difference between M84 and M86, both of which are usually thought of as being "elliptical-like galaxies".
M84 is a classified, at face value, as a classical elliptical, having regard to the observed shape of its two-dimensional outline and also because of its observed very-rapid falloff of surface brightness with increasing galactocentric radius.
In contrast, M86 starts with what looks like an "elliptical-galaxy-like" (spheroidal) component in its inner regions, which then gives way in its outer regions to one or more extremely faint disk- or halo- like morphological components that stretch an enormous distance outwards into the field. The "halo" of M86 actually extends much further into the field than it does in your image, when it is imaged at great depth.
(M86 was often classified as a mild S0 galaxy on the old photographic plates, as the classifiers could see some small trace of a second component outside of the inner spheroidal component)
The M84+M86 field looks
very strange when imaged very very deep, for instance here are some UK Schmidt images;
a deep image and a very very deep image (the second image was, I seem to recall, made from several stacked Schmidt films by David Malin) ::
Now here is a very very very deep image of the M84/M86 field , by J.C. Mihos and Paul H. Harding of CWRU. This image goes down to an Extremely Low surface brightness of 28th V magnitude per square arsecond:
In this image, the very-extended luminous halos of the galaxies are seen to merge with the intracluster (inter-galaxy) light that is found within the Virgo Cluster!
Yep, there are plenty of stars sitting out there
in between the galaxies of the Virgo Cluster.......
