What galaxy has the brightest square arc-second of surface area?
NGC 4486A, a companion to M87, comes to mind. The SB per square arc minute is around 10.3 or something. It's extremely small and compact and looks like a star at anything below 150x. It is very easily visible in my 60mm's, but look completely stellar. I accidentally discovered its nonstellar nature by accident with a C8 at 400x.


Clear skies!
Thomas, Denmark