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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
16.2.
Correction of Wavefront Distortion 415
Table 16.1
Angular Resolution for Constant Turbulence"
/l(^m) ro(cm)
0.5 26
2.2 150
10.0 940
ao (arc-sec)
0.50
0.37
0.28
a
1
(arc-sec)
0.016
0.07
0.31
"Z in Eq. (16.1.8) is held constant.
An important feature of note in Fig. 16.4 is the Strehl ratio S, the normalized
intensity at the peak of each PSF. A diffraction-limited PSF has iS > 0.80, hence
the effect of the turbulence used to find the PSFs in Fig. 16.4 is to dramatically
decrease the Strehl ratio. This decrease, in turn, affects the limiting magnitude
and provides an incentive to correct for wavefront distortion.
Table 16.1 gives values o ...
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Publisher Resources

ISBN: 9780126298109