NOAO Abstracts for SPIE Meeting in March
An Iterative Deconvolution Algorithm for Post Processing
of AO Images
Authors:
Stuart M. Jefferies, Julian C. Christou, Matt Cheselka, and E. Keith Hege
Abstract:
We present an iterative deconvolution algorithm for Adaptive Optics (AO)
imagery.
The point spread function (PSF) measurements for AO are typically obtained on
a point source reference nearby the target object. However, this PSF will
differ from that
of the target observations because of differences in the atmospheric
statistics and the wavefront sensor sensitivity to object brightness and
extent. Deconvolution of AO images thus becomes an ill-posed problem in
which the
object and the PSf are poorly known.
Our approach to this problem is to solve for both the object and PSF
simultaneously using as many physical constraints about the problem as
possible.
In this paper we present results from the
application of our algorithm to both real and simulated data for
a variety of sources: from point-like sources, to extended sources including
galaxies, artificial satellites, and solar system objects.
[NOAO at the SPIE Meeting in
March]
National Optical Astronomy Observatories, 950 North Cherry Avenue,
P.O. Box 26732, Tucson, Arizona 85726 Phone: (520) 318-8000
Posted: 05Mar1998