Comparison of restoration methods for deconvolution from wavefront sensing (DWFS)

Abstract

Images from ground-based astronomical telescopes are largely affected by atmospheric fluctuations. Using perturbed natural, point-source targets, this paper investigates three widely used image restoration methods: Tikhonov Regularization, Lucy-Richardson and Weiner filtering, and compares these methods, in terms of full-width at half maximum (FWHM). Both curvature and geometric wavefront sensors were used to stream continuous image data in an open-loop configuration.