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Proceedings Paper

Aperture Synthesis In Space: Computer Fringe Blocking
Author(s): Farrokh Vakili; Laurent Koechlin
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Paper Abstract

We discuss ways to remap the exit pupils of a ring-shaped array of optical telescopes, to obtain simultaneous spectral and angular informations about the object under study. Such an array, operated as a long baseline interferometer in space, would attain very large li-miting magnitudes in absence of atmospheric turbulence, and open a new imagimg window down to 100 nm wavelengths. We consider this instrument in typical photon-noisy situations, and propose a spatio-temporal technique to integrate the flying fringe pattern recorded by a time-tagged detector at its focal plane. In principle, our method should relaxe the inter-nal stiffness of the array to a few millimeters, making floppy structures or free-flying satellites adequate for very long baseline interferometry in space.

Paper Details

Date Published: 26 September 1989
PDF: 8 pages
Proc. SPIE 1130, New Technologies for Astronomy, (26 September 1989); doi: 10.1117/12.961512
Show Author Affiliations
Farrokh Vakili, OCA-Calern (Denmark)
Laurent Koechlin, OCA-Calern (France)

Published in SPIE Proceedings Vol. 1130:
New Technologies for Astronomy
Jean-Pierre Swings, Editor(s)

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