Gday, Rob,
Three or four of the galaxies are "bleeding obvious" even with modest apertures.
Here is a screen dump from Guide V.8 (software) showing Abell 3627
The magn limit was set to 14.5, so there are not a lot of galaxies that are easily visible, despite the fact that this is a major mass concentration. I do not know what the extinction values are through this field, but they are probably
high and
variable.
It is a while since I looked at info about this cluster of galaxies. Three years ago, there had been little optical data published.
I seem to recall that the late Anthony Fairall, who was an authority on the Largest Scale Structures in the universe, told me that Patrick Woudt, at the University of Cape Town, keeps data on this cluster. However, he seems to be doing other types of astron. research at present.
Woudt and Kraan-Korteweg et al., published on this cluster in the 2007 MNRAS, and bizarrely enough they referred to it as the Norma Cluster!!!!E#%^^&&***(!!!!
cheers, robert
Google search on "Atlas of Nearby Large-Scale Structures" to find Fairall's maps of nearby supergalactic structures.