Journal Article

Circular aperture interferometric apodization using homothety – I. Simulation results

A. Habib, O. Azagrouze, Y. El Azhari, Z. Benkhaldoun and M. Lazrek

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 406, issue 4, pages 2743-2748
Published in print August 2010 | ISSN: 0035-8711
Published online August 2010 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2010.16873.x
Circular aperture interferometric apodization using homothety – I. Simulation results

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In this paper we describe a two-dimensional apodization of a circular aperture produced by interferometry. The light that is diffracted by a circular aperture is split into two beams of different amplitudes, where one of them has undergone a homothety to change its radial dimensions using an afocal optical system. The two beams are then combined coherently to form an apodized point-spread function (PSF). This procedure allows us to reduce the diffraction wings of the PSF, with different reduction factors depending on the combination of parameters.

Keywords: instrumentation: high angular resolution; methods: numerical; techniques: interferometric; telescopes

Journal Article.  3428 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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