I saw alot of nebula/globular clusters/open clusters in my 3.5" ETX before upsizing to a bigger scope so 8" is definately able to see a whole world of deep sky objects. Some objects are dim though - dark skies help and even then sometimes you might need to use averted vision to spot fainter galaxies etc, but sometimes there is a reward in itself just to know that you have tracked down and spotted an object