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Proceedings Paper

TIRAN: testbed for interferometric remapped array nuller
Author(s): Lyu Abe; Adrian Belu; Jean Baptiste Daban; Farrokh Vakili; C. Caratti; C. Filloux; G. Rous; F. Rivassou; G. Guerri
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Paper Abstract

We describe a laboratory optical prototype being designed and built to conduct, at the Laboratoire Universtaire d'Astrophysique de Nice, France, some patrol experiments to prepare the construction of the interferometric array KEOPS (see these proceedings) at Dome C of Antarctica. Our testbed intends to gain experience on the Interferometric Remapped Array Nulling (IRAN) technique for imaging/nulling optical interferometry in IR (2.5μ-10μ) and its use with the KEOPS project. The optical design, beam-combination and data analysis are described in details. Critical points concerning off-axis, optical delay compensation and F.O. combination are outlined. The recent results obtained in our laboratory on our testbed of IRAN using F.O. bundles are described showing that massively integrated optics are the obvious way to be used in a many-telescope interferometric optical array. Future steps to drive our R&D program are discussed which can also apply to other foreseen optical synthesis arrays like the VLTI or space-borne interferometers.

Paper Details

Date Published: 20 October 2004
PDF: 5 pages
Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004); doi: 10.1117/12.561492
Show Author Affiliations
Lyu Abe, Lab. Universitaire d'Astrophysique de Nice (France)
Adrian Belu, Lab. Universitaire d'Astrophysique de Nice (France)
Jean Baptiste Daban, Lab. Universitaire d'Astrophysique de Nice (France)
Farrokh Vakili, Lab. Universitaire d'Astrophysique de Nice (France)
C. Caratti, Univ. de Nice-Sophia Antipolis (France)
C. Filloux, Univ. de Nice-Sophia Antipolis (France)
G. Rous, Institut Universitaire Technologique du Limousin (France)
F. Rivassou, Institut Universitaire Technologique du Limousin (France)
G. Guerri, Univ. de Nice-Sophia Antipolis (France)

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

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