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Nothing wrong with an image that is not very deep;
a lot of the most unusual stuff that goes on in galaxies happens near to the very center of a galaxy, where its surface brightness is highest.....indeed, there are many unusual central phenomena such as Supergiant bursts of OB star formation, active nuclei, large concentrations of cold molecular gas, etc.
These are the easiest sections of galaxies to image, as there is plenty of signal; but obviously, good-to -very good angular resolution is usually required.....for instance, your image of NGC 1097 (at your website) shows the outer outline of its tight centralmost ring of giant star forming regions; but a bit more resolution is probably required to show the ring properly.
Last edited by madbadgalaxyman; 05-10-2011 at 12:53 PM.
Reason: more info
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