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Proceedings Paper

Anisoplanatism and the use of laser guide stars
Author(s): Larry E. Goad
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Paper Abstract

The effects of focal and angular anisoplanatism are computed in order to evaluate the utility of using a single laser-produced guide star for the correction of ground-based astronomical imaging. The equations for the calculation of these effects are derived and the performance of a sodium-layer laser guide star system is computed for a Hufnagel atmospheric turbulence model. These results are presented in scaled units and for selected telescope apertures from 2-8 m in diameter operating at wavelengths from 0.5 to 2.0 microns. The limiting telescope aperture size which can be adequately corrected using a single sodium-layer guide star is shown to be much larger than previously estimated.

Paper Details

Date Published: 1 December 1991
PDF: 10 pages
Proc. SPIE 1542, Active and Adaptive Optical Systems, (1 December 1991); doi: 10.1117/12.48797
Show Author Affiliations
Larry E. Goad, Litton Itek Optical Systems (United States)

Published in SPIE Proceedings Vol. 1542:
Active and Adaptive Optical Systems
Mark A. Ealey, Editor(s)

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