Steve,
I enjoyed your image of N7552.
The nuclear region is good and intense, due to the effects of a very violent burst of star formation.
Radio and infrared observations plainly show a very tight (9 by 7 arcseconds) ring of supergiant star-formation regions surrounding the centre of this galaxy;
I am not sure how much of this would be visible in the optical regime, but probably the ring is well hidden due to the effects of dust extinction.
For those of you reading this thread who don't know the online version of the De Vaucouleurs Atlas of Galaxies, I note that there is a high resolution image of NGC 7552 at:
http://kudzu.astr.ua.edu/devatlas
There are a number of Hubble Space Telescope images of this galaxy available at
http://hla.stsci.edu
so, "just for fun and profit", here is a preview, from this website, of an F439W (blue) image taken with the WFPC2 instrument on the HST:
