Imaging and seeing

[dan_adi]

Hey guys, I have been reading about image scale , seeing and telescope resolution. If the seeing is for example 1.5 arc sec and you have a 8 inch telescope with a resolution of 0.67 arcsec, will the telescope achieve that 0.67 resolution? My guess it cannot, cause the seeing will not allow it to reach it s full potential. And another question: why should I go for a larger telescope above 8 inch diameter if the seeing is a limiting factor? If I can live on top of a mountain I can see the point, but in our backyards why do we get aperture fever? 

[ollypenrice]

Aperture does two things. For a given optical quality it increases optical resolution and it collects more light. Only the first of these advantages is negated by bad seeing. The increase in light grasp is unaffected.

Olly