Next: Introduction
Towards HST Restoration with a Space-Variant PSF, Cosmic
Rays and Other Missing Data
Hans-Martin Adorf
Space Telescope - European Coordinating Facility,
European Southern Observatory, Karl-Schwarzschild-Strasse 2,
D-85748 Garching bei München, Germany
Abstract:
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.
Keywords:
image restoration: space-variant PSFs, missing data:
cosmic rays, image rotation: faithful operator, insufficient
sampling, parallel computing