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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
318 12. Spectrometry: Definitions and Basic Principles
arrayed, the gain in observing efficiency is significant. We discuss some of the
optical characteristics of fiber-fed spectrometers in Chapter 15.
12.4.
SLITLESS SPECTROMETERS
Based on the discussions in Section 12.2, the relations for slitless spectro-
meters are easily found. The major differences for the slitless mode are: (1) the
image size of a stellar source is set by atmospheric seeing or diffraction rather
than a slit; (2) the anamorphic magnification is one in all practical configurations;
and (3) the diameter di is the beam size at the dispersing element.
Thus the relations in
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Publisher Resources

ISBN: 9780126298109