Charles Backus talked about super-resolution imaging with the Spitzer Space Telescope.
Spitzer provides good S/N, critically sampled with a relatively small telescope, and their observation strategies provide redundant coverage. They do their super-resolution, using the Richardson-Lucy algorithim, assuming a spatially invarient point-spread function (PSF) and uniform pixel noise. With Spitzer data you typically see a 3:1 reduction in the PSF width using the technique.
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