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Proceedings Paper

Field-resolution ratio progresses for interferometric arrays
Author(s): Laurent Koechlin; Denis Serre; Paul Duchon
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Paper Abstract

This paper presents progress made regarding the field to resolution ratio for aperture synthesis interferometers. In order to overcome a limit established for the field to resolution ratio of interferometric arrays, we propose an interferometer configuration which allows a better coverage of the spatial frequency plane. This setup requires large sub-apertures, which can be built more easily with a diffractive Fresnel plates than with large mirrors. We compare a dense array of 9 Fresnel sub-apertures, which gives a snapshot field-resolution ratio of 400, versus a sparse array of 150 small apertures, which yields a field-resolution ratio of 150.

Paper Details

Date Published: 20 October 2004
PDF: 6 pages
Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004); doi: 10.1117/12.551234
Show Author Affiliations
Laurent Koechlin, Observatoire Midi-Pyrenees (France)
Denis Serre, Observatoire Midi-Pyrenees (France)
Paul Duchon, Observatoire Midi-Pyrenees (France)

Published in SPIE Proceedings Vol. 5491:
New Frontiers in Stellar Interferometry
Wesley A. Traub, Editor(s)

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