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  • Vol. 21, Iss. 22 — Nov. 15, 1996
  • pp: 1806–1808

Focus anisoplanatism: a limit to the determination of tip-tilt with laser guide stars

Christopher R. Neyman  »View Author Affiliations


Optics Letters, Vol. 21, Issue 22, pp. 1806-1808 (1996)
http://dx.doi.org/10.1364/OL.21.001806


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Abstract

One limitation to using laser beacons to measure tilt is focus anisoplanatism. By use of a spectral representation for the atmospheric turbulence, the wave-front error is expressible as an integral over the distribution of turbulence with height. Results are calculated for turbulence profiles typical of astronomical sites. The decrease in Strehl ratio when a single laser guide star is used to measure tip-tilt is shown to be especially significant at visible wavelengths, precisely where tip-tilt is most difficult to obtain from natural stars.

© 1996 Optical Society of America

History
Original Manuscript: June 14, 1996
Published: November 15, 1996

Citation
Christopher R. Neyman, "Focus anisoplanatism: a limit to the determination of tip-tilt with laser guide stars," Opt. Lett. 21, 1806-1808 (1996)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-21-22-1806


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