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Proceedings Paper

Developing a new software package for PSF estimation and fitting of adaptive optics images
Author(s): Laura Schreiber; Emiliano Diolaiti; Antonio Sollima; Carmelo Arcidiacono; Michele Bellazzini; Paolo Ciliegi; Renato Falomo; Italo Foppiani; Laura Greggio; Barbara Lanzoni; Matteo Lombini; Paolo Montegriffo; Emanuele Dalessandro; Davide Massari
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Paper Abstract

Adaptive Optics (AO) images are characterized by structured Point Spread Function (PSF), with sharp core and extended halo, and by significant variations across the field of view. In order to enable the extraction of high-precision quantitative information and improve the scientific exploitation of AO data, efforts in the PSF modeling and in the integration of suitable models in a code for image analysis are needed. We present the current status of a study on the modeling of AO PSFs based on observational data taken with present telescopes (VLT and LBT). The methods under development include parametric models and hybrid (i.e. analytical / numerical) models adapted to various types of PSFs that can show up in AO images. The specific features of AO data, such as the mainly radial variation of the PSF with respect to the guide star position in single-reference AO, are taken into account as much as possible. The final objective of this project is the development of a flexible software package, based on the Starfinder code (Diolaiati et Al 2000), specifically dedicated to the PSF estimation and to the astrometric and photometric analysis of AO images with complex and spatially variable PSF.

Paper Details

Date Published: 13 September 2012
PDF: 9 pages
Proc. SPIE 8447, Adaptive Optics Systems III, 84475V (13 September 2012); doi: 10.1117/12.926900
Show Author Affiliations
Laura Schreiber, INAF, Astronomical Observatory of Padova (Italy)
Emiliano Diolaiti, INAF - Osservatorio Astronomico di Bologna (Italy)
Antonio Sollima, INAF - Osservatorio Astronomico di Padova (Italy)
Carmelo Arcidiacono, INAF - Osservatorio Astronomico di Bologna (Italy)
Michele Bellazzini, INAF - Osservatorio Astronomico di Bologna (Italy)
Paolo Ciliegi, INAF - Osservatorio Astronomico di Bologna (Italy)
Renato Falomo, INAF - Osservatorio Astronomico di Padova (Italy)
Italo Foppiani, INAF - Osservatorio Astronomico di Bologna (Italy)
Laura Greggio, INAF - Osservatorio Astronomico di Padova (Italy)
Barbara Lanzoni, Univ. degli Studi di Bologna (Italy)
Matteo Lombini, INAF - Osservatorio Astronomico di Bologna (Italy)
Paolo Montegriffo, INAF - Osservatorio Astronomico di Bologna (Italy)
Emanuele Dalessandro, Univ. degli Studi di Bologna (Italy)
Davide Massari, Univ. degli Studi di Bologna (Italy)


Published in SPIE Proceedings Vol. 8447:
Adaptive Optics Systems III
Brent L. Ellerbroek; Enrico Marchetti; Jean-Pierre Véran, Editor(s)

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