20 October 2004 The Nulltimate project: building and testing, at low temperature, achromatic phase shifters to prepare the Darwin mission
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Abstract
In the context of the Darwin mission, aiming to detect terrestrial extrasolar planets, European Space Administration (ESA) has an R&D program trying to solve the crucial problems, like flotilla spacecraft control, optical spatial filtering, etc... One of the key optical devices of this mission will be Achromatic Phase Shifter (APS) able to accurately provide a 180° phase shift in the IR 6 - 18 microns range. The Institut d'Astrophysique Spatiale (IAS) is leading, in the frame of an ESA granted contract, an European consortium of 9 universities and companies, named Nulltimate, aiming to develop and test three different APS. IAS itself is in charge of the cryogenic test bench facility which is presented here.
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Alain Labeque, Bruno Chazelas, Frank Brachet, Christian Commeaux, Philippe Blache, Alain Leger, Marc Ollivier, Thierry Lepine, Claude Valette, "The Nulltimate project: building and testing, at low temperature, achromatic phase shifters to prepare the Darwin mission", Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004); doi: 10.1117/12.550910; https://doi.org/10.1117/12.550910
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