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Astronomical Optics, 2nd Edition
book

Astronomical Optics, 2nd Edition

by Daniel J. Schroeder
September 1999
Intermediate to advanced content levelIntermediate to advanced
478 pages
21h 54m
English
Academic Press
Content preview from Astronomical Optics, 2nd Edition
10.5.
Diffraction Integrals and Fourier Theory 271
that are dififraction-limited for visible and near ultraviolet wavelengths. For an
aperture at larger field angles, on the other hand, the residual astigmatism of the
HST must be corrected by the optics following the aperture.
If we approach the angular size of an image fi-om the point of view of
diffraction theory, then an image that is diffraction-limited has an approximate
diameter for the Airy disk oflAAX/D or
1.22>l/a
for a clear aperture. Contrary to
predictions
fi*om
geometric optics, an image cannot be smaller than that given by
diffraction theory. It is instructive to take the top
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Publisher Resources

ISBN: 9780126298109