Quote:
Originally Posted by brian nordstrom
 Peter I would put my Istar 127mm f8 achro up against your TV85 on Saturn any day , the Istar would win in every way .
that's my opinion .
As would any 120mm Ed doublet on the market today .
I find the 120mm class refractors to be the best all round scopes , size/performance ratio .  .
Brian. |
Well your Istar isn't exactly your average achro, is it?
But the OP's question is about comparing a 120ED-type scope against his existing 6" Mak. I came across a post on Cloudy Nights the other night where someone did this comparison and said they were about the same in terms of image brightness. But obviously different animals when you consider portability, resolving power, etc.
Then there's the actual optical quality of the scopes being compared. Is a Skywatcher 120ED as "good" as an Intes MK-65? I don't know.
Personally I'd like both!