Physics – Optics
Scientific paper
Sep 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3353..426v&link_type=abstract
Proc. SPIE Vol. 3353, p. 426-437, Adaptive Optical System Technologies, Domenico Bonaccini; Robert K. Tyson; Eds.
Physics
Optics
21
Scientific paper
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.
Rigaut Francois J.
Veran Jean Pierre
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