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Interbands Phase Models for Polychromatic Image Reconstruction in Optical Interferometry

A. Schutz, A. Ferrari, É. Thiébaut, F. Soulez, M. Vannier, D. Mary

Proceedings of the SPIE Astronomical Telescopes + Instrumentation Conference on Optical and Infrared Interferometry and Imaging V (SPIE-ATI'16), Edinburgh, United Kingdom, June 27-July 1, 2016, vol. 9907, pp. 99073K-1/99073K-9.



This paper presents an extension of the spatio-spectral ("3D") image reconstruction algorithm called PAINTER (Polychromatic opticAl INTErferometric Reconstruction software). The algorithm is able to solve large scale problems and relies on an iterative process, which alternates estimation of polychromatic images and of complex visibilities. The complex visibilities are not only estimated from squared moduli and closure phases, but also from differential phases, which helps to constrain the polychromatic reconstruction. Alternative methods to construct the specific differential phases used in PAINTER are proposed. Simulations on synthetic data illustrate the specificities of the proposed methods.


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AUTHOR="Schutz, A. and Ferrari, A. and Thi{\'{e}}baut, {\'{E}}. and
        Soulez, F. and Vannier, M. and Mary, D.",
TITLE="Interbands Phase Models for Polychromatic Image Reconstruction in
        Optical Interferometry",
BOOKTITLE="Proceedings of the {SPIE} Astronomical Telescopes +
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