Zernike-polynomial expansion of turbulence-induced centroid anisoplanatism

Details Zernike-polynomial expansion of turbulence-induced centroid anisoplanatism Zernike-polynomial expansion of turbulence-induced centroid anisoplanatism

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985optl...10..258c&link_type=abstract

Optics Letters (ISSN 0146-9592), vol. 10, June 1985, p. 258-260.

Physics

Optics

6

Aberration, Adaptive Optics, Atmospheric Turbulence, Optical Tracking, Telescopes, Wave Front Deformation, Apertures, Asymptotic Methods, Centroids, Mirrors

Scientific paper

A tilt term, together with coma terms, is noted to constitute an expansion of image centroid position after propagation through atmospheric turbulence in the framework of Zernike polynomial coefficients; centroid anisoplanatism therefore arises from turbulence-induced coma distortions. The deleterious effects of centroid anisoplanatism can be reduced to any desired level by means of a correction of coma effects to a sufficiently high order. The Strehl ratio is given by an asymptotic formula.

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