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Image Restorations of High Photometric Quality

L. B. Lucy

Space Telescope - European Coordinating Facility, European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748 Garching bei München, Germany

[1]Affiliated to Astrophysics Division, Space Science Department, European Space Agency

Abstract:

An image restoration technique is described that achieves high photometric accuracy for both stars and distributed emission. The technique makes use of observer-supplied information that some objects in the field are point sources and thereby eliminates the ringing and photometric bias that arise with conventional restoration procedures. A hierarchy of codes is described based on this two-channel decomposition of astronomical images. The more sophisticated of these codes incorporate simultaneous estimation of the PSF and are thus especially relevant for ground-based imaging. Observing programs are described in which these codes effectively transfer the resolution of HST to ground-based images.

Keywords: Keywords?



rlw@sundog.stsci.edu
Mon Apr 18 15:23:11 EDT 1994