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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
14.2.
Grating Aberrations
357
faAiS
x'
Fig. 14.2. Spectrum line curvature in spectrometer focal plane with radius of curvature p. See Eq.
(14.1.10).
this curvature is superposed on any curvature of the astigmatic image. The reader
can consult the reference by Welford (1965) for details on this combination.
It is also important to note that curvature and tilt are larger for an echelle than
for a typical grating of small blaze angle, in direct proportion to the angular
dispersion. This factor is an important one to take into account in the design of
any spectrometer, but especially so for an echelle instrument.
14.2.
GRATING ABERRATIONS
The
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Publisher Resources

ISBN: 9780126298109