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Originally Posted by ausastronomer
The 8" dob will show infinitely more detail in moments of good seeing than the refactor...
Also tried a 4" Flourite APO against a 10" dob and the 10" blows the 4" away by a bigger margin.
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John, I understand what you are saying, but
infinitely more?? And then the 10" goes even beyond infinity??
Rastis, detail goes like inverse aperture squared. (This is the quantitative aperture rules rule.) So 8" Dob will show you (8/4)^2 = 4 times more detail than the 4" scope. In other words, if you were to digitise it, you would need four times the number of megapixels to capture the full detail of the image.