Towards HST Restoration with a Space-Variant PSF, Cosmic Rays and Other Missing Data

Hans-Martin Adorf


The open problem of restoring full Wide Field and Planetary Camera (WF/PC) image frames is considered. Several novel algorithms or modifications to existing algorithms are described useful for restoring undersampled (multi-) frames degraded by a space-variant point spread function (SV-PSF) and by irregular faults. The algorithms comprise a faithful rotation operator for sufficiently sampled images, an alternative method for treating regular and/or irregular missing data, and an algorithm for SV-PSF restoration combining the classical sectioned restoration method of Trussel & Hunt with the generalized ``co-addition'' restoration method of Lucy & Hook. With these algorithms a comprehensive full-frame WF/PC restoration now appears to be feasible.


Pages 72-78


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