Abstract
A simple derivation is given for the expression of one-dimensional spectra of turbulence-induced Zernike aberration terms in the case of a stellar source at infinity. Numerical results are presented for several terms. Expressions are given for the maximum acceptable delay and the maximum isoplanatic angle in a partially compensating adaptive optics system. Temporal-frequency spectra of the Zernike terms, recorded at the Canada–France–Hawaii telescope, are well reproduced when one convolves all the corresponding theoretical spectra with the same turbulence distribution. Only a few atmospheric layers are found to contribute to image degradation.
© 1993 Optical Society of America
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