Details

Autor(en) / Beteiligte

• Koechlin, L.
• Serre, D.
• Duchon, P.

Titel

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

Ist Teil von

• Astronomy and astrophysics (Berlin), 2005-11, Vol.443 (2), p.709-720

Ort / Verlag

Les Ulis: EDP Sciences

Erscheinungsjahr

2005

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• 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 UV (50 nanometers) to the IR (20 μm). 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.