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Proceedings Paper

Deconvolution method for accurate astrometry and photometry on adaptive optics images of stellar fields
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Paper Abstract

We present a method to accurately find the position and photometry of each source in a stellar field blurred by the adaptive optics corrected point spread function (AO PSF). The method takes into account the specificities of the object as well as the specificities of the AO PSF. The algorithm is based on the minimization in the Fourier domain of a regularized least square objective function using the Levenberg-Marquardt method. Astrometric and photometric data of each source are retrieved with an excellent accuracy and super-resolution is achieved. The performance of the method in terms of accuracy is assessed on simulated fields. Then, we present results obtained on images of the Galactic Center, a very crowded field on which the method shows remarkable robustness and stability.

Paper Details

Date Published: 11 September 1998
PDF: 12 pages
Proc. SPIE 3353, Adaptive Optical System Technologies, (11 September 1998); doi: 10.1117/12.321740
Show Author Affiliations
Jean-Pierre Veran, Dominion Astrophysical Observatory/National Research Council Canada (Canada)
Francois J. Rigaut, European Southern Observatory (United States)

Published in SPIE Proceedings Vol. 3353:
Adaptive Optical System Technologies
Domenico Bonaccini; Robert K. Tyson, Editor(s)

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