bwh
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2007 Mars - closest approachSpent few nights looking at mars with 5inch refractor and 8inch SCT
also with aid of 5x powermate televue barlow.
The 5inch gave clearest views - and while mars small (even at closest approach) - could see that surface was mottled red with black blotches... sadly no canals.
The 5 inch does not require collimation so setup easy, but no tracking (skywatcher - there is a rq drive in canada - but they only sell to canadian credit card addresses... doh)
My 8inch generally needs collimation to get best performance, and so while this has 40% more light, its yet to provide better results that 5inch.
so bigger not allways better (guess 8inch better for dso)
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