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I only used the 6" refractor and 16" reflector as examples of scopes that could be compared. I guess I was unclear in using examples of expensive scopes to show the effects of aperture on resolution.
In the Dawes Limit example, I used the C6 and 10" newt.
I was merely pointing out that it doesn't matter how expensive the 6" scope is, a larger scope will resolve smaller details.
Now, if talking about the optics in the typical SCT versus the typical 10" Chinese newtonian, you could be comparing 1/2 wave optics with 1/6 wave optics. Or comparing a well cooled scope with one not yet cooled. Or an out-of-collimation scope with one well collimated (why I asked about collimation). There are other possibilities.
But, even if the 6" SCT were the best one ever made and the 10" dob an average GSO, the 10" aperture will still resolve smaller details on the moon and planets.
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