Quote:
Originally Posted by Wavytone
LOL... You should get a job in the marketing dept of Celestron, who published a technical paper proposing it was sufficient to put 90% of the light within a "circle of confusion", and carefully avoided actually defining the diameter of that "circle of confusion". Mel Bartels “less than perfect” is not defined, and it sounds suspiciously like someone with a fast newtonian trying to justify a big fat secondary obstruction.
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Hello Wavy ,
Sorry for the late reply .
I'm no fan of systems using large secondary's , best visual newts I ever had were a 6" F/10 & a 8" F/7.2
A question for you , Can a 190mm Mac/newt match the visual performance of a 6" Apo refractor in a side by side test regarding resolution ?
Cheers & Beers
Bobby