Anisoplanatism and the use of laser guide stars

Larry E. Goad

doi:10.1117/12.48797

1 December 1991 Anisoplanatism and the use of laser guide stars

Larry E. Goad

Proceedings Volume 1542, Active and Adaptive Optical Systems; (1991) https://doi.org/10.1117/12.48797
Event: San Diego, '91, 1991, San Diego, CA, United States

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.

Citation Download Citation

Larry E. Goad "Anisoplanatism and the use of laser guide stars", Proc. SPIE 1542, Active and Adaptive Optical Systems, (1 December 1991); https://doi.org/10.1117/12.48797

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