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Better HST Point-Spread Functions: Phase Retrieval and Blind Deconvolution

Next: Introduction

Better HST Point-Spread Functions: Phase Retrieval and Blind Deconvolution

Richard L. White

Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218

Abstract:

The accuracy of HST image restorations is often limited by the quality of point-spread functions that are available. Phase retrieval methods are being applied to HST PSFs in an effort to improve the agreement between observed PSFs and PSFs computed using optical modeling programs. The use of blind deconvolution to make better use of observed PSFs is also discussed.

Keywords: image restoration, Poisson statistics, Richardson-Lucy iteration, deconvolution, Hubble Space Telescope, phase retrieval, blind deconvolution

rlw@sundog.stsci.edu
Mon Apr 18 16:09:26 EDT 1994