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[fitsbits] CRPIX clarification
On Fri 2008/05/30 12:48:46 +1000, Mark Calabretta wrote in a message to: Jonathan McDowell , Eric Greisen and copied to: consequently a centre. As I explained previously, in terms of Fourier sampling theory what we call an "image" is actually a shah function. See http://en.wikipedia.org/wiki/Dirac_comb http://mathworld.wolfram.com/ShahFunction.html |
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