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28 June 2006 Direct imaging in interferometry: technical aspects and preliminary results of a fibered pupil densifier
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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.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Fabien Patru, Denis Mourard, Laurent Delage, François Reynaud, Jean-Michel Clausse, Daniel Bonneau, Michael Dubreuil, Alain Roussel, Yves Hugues, Sandra Bosio, Yves Bresson, and Olivier Lardière "Direct imaging in interferometry: technical aspects and preliminary results of a fibered pupil densifier", Proc. SPIE 6268, Advances in Stellar Interferometry, 62681S (28 June 2006); https://doi.org/10.1117/12.671555
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