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Proceedings Paper

Direct imaging in interferometry: technical aspects and preliminary results of a fibered pupil densifier
Author(s): Fabien Patru; Denis Mourard; Laurent Delage; François Reynaud; Jean-Michel Clausse; Daniel Bonneau; Michael Dubreuil; Alain Roussel; Yves Hugues; Sandra Bosio; Yves Bresson; Olivier Lardière
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Paper Abstract

We present a test bench designed to study the performances of interferometric recombination systems, mainly for direct imaging applications (hypertelescope principle). It aims at comparing the aperture synthesis, Fizeau and densified pupils beam combination schemes. It allows identification of the technical requirements like photometry and cophasing correction of the future imaging recombiners for large arrays. A densified assembly has been designed in the visible wavelengths, using a multi-apertures mask associated with a wavefront sensor. It allows pupil rearrangement and spatial filtering by using single mode fibers. The technical specifications and the conception of the fiber densifier are described here, with a particular attention to the correction of the differential chromatic dispersion.

Paper Details

Date Published: 28 June 2006
PDF: 9 pages
Proc. SPIE 6268, Advances in Stellar Interferometry, 62681S (28 June 2006); doi: 10.1117/12.671555
Show Author Affiliations
Fabien Patru, Observatoire de la Côte d'Azur, CNRS (France)
Denis Mourard, Observatoire de la Côte d'Azur, CNRS (France)
Laurent Delage, XLIM, CNRS (France)
François Reynaud, XLIM, CNRS (France)
Jean-Michel Clausse, Observatoire de la Côte d'Azur, CNRS (France)
Daniel Bonneau, Observatoire de la Côte d'Azur, CNRS (France)
Michael Dubreuil, Observatoire de la Côte d'Azur, CNRS (France)
Alain Roussel, Observatoire de la Côte d'Azur, CNRS (France)
Yves Hugues, Observatoire de la Côte d'Azur, CNRS (France)
Sandra Bosio, Observatoire de la Côte d'Azur, CNRS (France)
Yves Bresson, Observatoire de la Côte d'Azur, CNRS (France)
Olivier Lardière, Collège de France, Observatoire de Haute Provence (France)


Published in SPIE Proceedings Vol. 6268:
Advances in Stellar Interferometry
John D. Monnier; Markus Schöller; William C. Danchi, Editor(s)

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