Image Restorations of High Photometric Quality

L. B. Lucy


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.


Pages 79-85


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