Physics – Optics
Scientific paper
Dec 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pasp...97.1209d&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 97, Dec. 1985, p. 1209-1214.
Physics
Optics
30
Atmospheric Optics, Charge Coupled Devices, Geometrical Optics, Image Analysis, Spectrographs, Stars, Telescopes, Astronomical Spectroscopy, Energy Distribution, Light Transmission, Linear Receivers, Lorentz Transformations, Point Spread Functions
Scientific paper
This paper analyzes the spatial energy distribution of stellar images formed by ground-based astronomical telescopes. Lorentzian functions are fitted to intensity profiles of real images obtained with a CCD and the results are used to calculate the energy transmission of astronomical instruments which accept an image with a rectangular or circular stop. The results have been used in the design of the new large echelle spectrographs for the Anglo Australian Telescope (AAT) and the William Herschel Telescope (WHT). A series of figures is presented showing the transmission as a function of the seeing FWHM and the aperture size.
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