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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
438 17. Detectors, Signal-to-Noise, and Detection Limits
Therefore the slope in a log (SNR) versus magnitude plot is different by a factor
of two in the two regions.
17.4.
DETECTION LIMITS: STELLAR PHOTOMETRY
We now take Eq. (17.3.4) and give results for HST and ground-based
telescopes of different aperture, each with the same detector and filter character-
istics.
The parameters used for the calculations are given in Table 17.3, with
characteristics for the CCD taken from Table 17.1.
We choose
K:
= 0.8 for all telescopes and assume this fraction of the
transmitted light contributes to the detected signal. For the wide-field mode of
ACS,
th
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Publisher Resources

ISBN: 9780126298109