Atmospheric turbulence corrupts astronomical images formed by ground-based telescopes. Adaptive optics (AO) systems allow the effects of turbulence-induced aberrations to be reduced for a narrow field of view (FOV) corresponding approximately to the isoplanatic angle theta0 . For field angles larger than theta0, the point spread function (PSF) gradually degrades as the field angle increases. In this paper, the effects of anisoplanatism are studied on both simulated and measured compensated images from the AMOS 3.67 m telescope.; A technique to predict the PSF as function of the field angle is presented and both simulated and experimental anisoplanatic intensity images are reconstructed by means of a block-processing method using the predicted PSF. The deconvolution results using the space-varying predicted PSF are compared to deconvolution results using the space-invariant on-axis PSF. The reconstruction results using the predicted PSF technique shows an improvement of the MS error between the reconstructed image and the object up to 80.5% in the case of simulated images and up to 55.2% in the case of experimental data.
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