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Phase-retrieval analysis of pre-and post-repair Hubble Space Telescope images

Krist, John E.; Burrows, Christopher J.

Phase-retrieval measurements of point-spread functions from the pre- and post-repair Hubble Space Telescope are presented. The primary goal was to determine the aberrations present in the second wide-field and planetary camera (WFPC2) to align and validate its corrective optics. With both parametric model-fitting techniques and iterative (Gerchber…