Last observing session at SWAG we had 2 12" and 2 8" dobs setup, the 8" ones held their own pretty well as skies were dark. In the suburbs, 12" makes all the difference, even here where LP is nowhere as bad as in Melb, I can find heaps of galaxies with the 12" that just were not visible in the 8". All that being said, there are thousands of objects within reach of the 8 even under poor skies!
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