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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
17.2.
Signal-to-Noise Ratio 433
2=1 |im, F = 30, and pixel size A = 15 jim, then there are two pixels spanning
length AF. For this correctly sampled wavelength, the value of
Z
does not depend
on the precise position of the peak of the PSF on the pixel array. Whether this
peak is centered on one pixel or is at a comer of
a
pixel is of
no
consequence. If,
however, a PSF of a shorter wavelength is used, then the PSF is undersampled
(XF < 2A) and the position of the PSF on the array does affect the value of
Z.
Not
surprisingly, Z is largest for an undersampled wavelength when the peak of the
PSF is centered on one pixel.
17.2.
SIGNAL-TO-NOISE RATI ...
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Publisher Resources

ISBN: 9780126298109