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Proceedings Paper

Comparison Of Two Techniques For Determining Atmospheric Seeing
Author(s): Frank D Eaton; William A Peterson; John R Hines; James J Drexler; Arthur H Waldie; David B Soules
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Paper Abstract

Theoretical and experimental results are compared between two techniques for determining atmospheric "seeing" conditions: (a) a method evaluating the modulation transfer function (MTF) of the atmosphere by measuring the line spread function of a star image, and (b) a method measuring the angle of arrival through two relatively small apertures. Near vertical viewing of single stellar sources is considered in all cases. Values of Fried's parameter, 1.0, derived from simultaneous measurements from the different techniques are presented and comparisons of these data are discussed. Results of measurements of mechanical vibrations of the telescope system are presented and the effect of these vibrations on results obtained by the different techniques are evaluated. Optical arrangements and detectors for the two systems are outlined. The system measuring the line spread function of a stellar image uses a linear CCD while the angle of arrival system employs a 2-D CCD camera.

Paper Details

Date Published: 10 August 1988
PDF: 16 pages
Proc. SPIE 0926, Optical, Infrared, Millimeter Wave Propagation Engineering, (10 August 1988); doi: 10.1117/12.945791
Show Author Affiliations
Frank D Eaton, U.S. Army Atmospheric Sciences Laboratory (United States)
William A Peterson, U.S. Army Atmospheric Sciences Laboratory (United States)
John R Hines, U.S. Army Atmospheric Sciences Laboratory (United States)
James J Drexler, Lockheed-EMSCO (United States)
Arthur H Waldie, Lockheed-EMSCO (United States)
David B Soules, Lockheed-EMSCO (United States)


Published in SPIE Proceedings Vol. 0926:
Optical, Infrared, Millimeter Wave Propagation Engineering
Norman S. Kopeika; Walter B. Miller, Editor(s)

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