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Astronomy and Cosmology
Astronomy and Astrophysics
Continuous Field Image: Hubble Deep Field & Exoplanets
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[QUOTE="sophiecentaur, post: 6141821, member: 199289"] That statement could be over-simplified. Basic signalling theory tells us that the limit to resolution depends, not only on the (spatial) bandwidth but on signal to noise ratio. The basic Raleigh criterion is only a rule of thumb. The shape of the dip between two peaks can be refined and refined without limit by integration over a long time. Shannon tells us that the apparent limits, due to pixel size (spatial sampling rate) and aperture can always be exceeded by reducing the bandwidth of the system enough. This is 'only' an extension of what every good amateur Astrophotographer can get by stacking dozens of images from a light polluted urban environment; a bit more sophisticated than that, though. [/QUOTE]
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Astronomy and Cosmology
Astronomy and Astrophysics
Continuous Field Image: Hubble Deep Field & Exoplanets
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