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Proceedings Paper

Speckle interferometry with partial adaptive optics correction for big telescopes and the outer scale of turbulence
Author(s): Valeri G. Orlov; Valeri V. Voitsekhovich; Salvador Cuevas
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Paper Abstract

The influence of the turbulence outer scale on the power spectrum (PS) of speckle interferograms and on the Strehl ratio obtained with low-order adaptive optics (AO) system is examined by numerical simulation. It is shown that the outer scale has a little positive effect the PS when the outer scale magnitude becomes less than the aperture diameter. The finite outer scale has a positive effect on the STrehl ratio of the uncorrected long-exposure image. It is also shown that the Strehl ratio produced by a second-order AO correction is affected quite strongly by the finite outer scale. For the more higher-order correction, the effect under study is very weak and it appears only when the outer scale magnitude becomes less than the aperture diameter.

Paper Details

Date Published: 11 September 1998
PDF: 9 pages
Proc. SPIE 3353, Adaptive Optical System Technologies, (11 September 1998); doi: 10.1117/12.321634
Show Author Affiliations
Valeri G. Orlov, Instituto de Astronomia/Univ. Nacional Autonoma de Mexico (Mexico)
Valeri V. Voitsekhovich, Instituto de Astronomia/Univ. Nacional Autonoma de Mexico (Mexico)
Salvador Cuevas, Instituto de Astronomia/Univ. Nacional Autonoma de Mexico (Mexico)


Published in SPIE Proceedings Vol. 3353:
Adaptive Optical System Technologies
Domenico Bonaccini; Robert K. Tyson, Editor(s)

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