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High resolution imaging with Fresnel interferometric arrays: suitability for exoplanet detection

L. Koechlin·D. Serre·P. Duchon
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Abstract

We propose a new kind of interferometric array that yields images of high dynamic range and large field. The numerous individual apertures in this array form a pattern related to a Fresnel zone plate. This array can be used for astrophysical imaging over a broad spectral bandwidth spanning from the U.V. (50 nanometers) to the I.R. (20 microns). Due to the long focal lengths involved, this instrument requires formation-flying of two space borne vessels. We present the concept and study the S/N ratio in different situations, then apply these results to probe the suitability of this concept to detect exoplanets.

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L. Koechlin, D. Serre, P. Duchon. 2005-10-13. High resolution imaging with Fresnel interferometric arrays: suitability for exoplanet detection. https://doi.org/10.1051/0004-6361%3A20052880

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