TIRAN: testbed for interferometric remapped array nuller

Lyu Abe; Adrian Belu; Jean Baptiste Daban; Farrokh Vakili; C. Caratti; C. Filloux; G. Rous; F. Rivassou; G. Guerri

doi:10.1117/12.561492

20 October 2004 TIRAN: testbed for interferometric remapped array nuller

Lyu Abe, Adrian Belu, Jean Baptiste Daban, Farrokh Vakili, C. Caratti, C. Filloux, G. Rous, F. Rivassou, G. Guerri

Proceedings Volume 5491, New Frontiers in Stellar Interferometry; (2004) https://doi.org/10.1117/12.561492
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

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.

Citation Download Citation

Lyu Abe, Adrian Belu, Jean Baptiste Daban, Farrokh Vakili, C. Caratti, C. Filloux, G. Rous, F. Rivassou, and G. Guerri "TIRAN: testbed for interferometric remapped array nuller", Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004); https://doi.org/10.1117/12.561492

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