26 September 1989 Theoretical And Experimental Evaluation Of Isoplanatic Patch Size For Adaptive Optics
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Proceedings Volume 1130, New Technologies for Astronomy; (1989) https://doi.org/10.1117/12.961503
Event: 1989 International Congress on Optical Science and Engineering, 1989, Paris, France
Abstract
Correlation functions of the Zernike-polynomial expansion coefficients of turbulence induced aberrated wavefronts are presented and experimentally confirmed using laboratory-generated Kolrnogorov turbulence. These functions are convenient for characterizing the anisoplanatic error for adaptive optics. The isoplanatic patch-size of such systems is evaluable according to their specific working parameters. We find, for example, with a 4 m telescope working at 3.5 μm and sensing the wavefront phase fluctuation on 20 Zernike polynomials, an isoplanatic patch about 22 arcseconds wide.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
F. Chassat, F. Chassat, G. Rousset, G. Rousset, J. Primot, J. Primot, "Theoretical And Experimental Evaluation Of Isoplanatic Patch Size For Adaptive Optics", Proc. SPIE 1130, New Technologies for Astronomy, (26 September 1989); doi: 10.1117/12.961503; https://doi.org/10.1117/12.961503
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