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Old 26-01-2010, 12:08 AM
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Peter Ward
Galaxy hitchhiking guide

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Join Date: Dec 2007
Location: The Shire
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Quote:
Originally Posted by rat156 View Post

To get high resolution you need to satisfy Nyquist....
Sorry, that's not quite right, 2 arc sec per pixel would result in tragic planetary images hence high res-planetary imagers use FL's that sample the sky well beyond Nyquist .

All I'm saying is you simply can't divorce the seeing that easily from the equation. Oversampling through longer FL's can and does give tighter stars and also helps with deconvolution.
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