Tim Auton wrote:
The Titan image apparently shows spatial resolution at a frequency
higher than the Sparrow limit of the instrument. Show me a
peer-reviewed paper that says that is possible in the general case and
I might believe it's not noise.

No paper, but a plausibility argument. The output image is the
source image (i.e., the object) convolved with the PSF of the instrument.
Construct the inverse of the PSF, and deconvolve. You should improve
your image beyond the ordinary resolution constraints.

Possible problems are that the PSF is now sufficiently well-known to
do this (I'm sure the noise level in the output is highly sensitive to
errors in estimating the PSF), the object is too large and hence the
PSF varies too much over the field of view, the seeing is too bad, etc.
I'm sure there's lots of stuff I'm not thinking of.

Brian Tung
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