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Image Restorations of High Photometric Quality. II. Examples
R. N. Hook &L. B. Lucy
Space Telescope - European Coordinating Facility, European Southern
Observatory, Karl-Schwarzschild-Str. 2, D-85748 Garching bei München,
Germany
[1]Affiliated to Astrophysics Division, Space Science
Department, European Space Agency
Abstract:
A generalized form of the Lucy-Richardson restoration method is described
in which images in the object plane are divided into two channels.
One of these contains
point sources (i.e., 
-functions) and the other models
a smooth background distribution. The latter image is regularized by the use
of an entropy term and hence has enforced smoothness. This approach
avoids problems encountered in the photometry of the results of
non-linear restoration methods. Examples of the use of this
technique on standard simulated HST data frames are given, including
some assessments of its photometric accuracy. Implementations running under
both IRAF and MIDAS are available.
Keywords:
Image Restoration, photometry