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21 November 2017 Towards a laboratory breadboard for PEGASE, the DARWIN pathfinder
F. Cassaing, J.-M. Le Duigou, B. Sorrente, B. Fleury, N. Gorius, F. Brachet, C. Buisset, M. Ollivier, F. Hénault, D. Mourard, Y. Rabbia, M. Delpech, P.-Y. Guidotti, A. Léger, M. Barillot, D. Rouan, G. Rousset
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Proceedings Volume 10567, International Conference on Space Optics — ICSO 2006; 105670L (2017) https://doi.org/10.1117/12.2308162
Event: International Conference on Space Optics 2006, 2006, Noordwijk, Netherlands
Abstract
PEGASE, a spaceborne mission proposed to the CNES, is a 2-aperture interferometer for nulling and interferometric imaging. PEGASE is composed of 3 free-flying satellites (2 siderostats and 1 beam combiner) with baselines from 50 to 500 m. The goals of PEGASE are the spectroscopy of hot Jupiter (Pegasides) and brown dwarves, the exploration of the inner part of protoplanetary disks and the validation in real space conditions of nulling and visibility interferometry with formation flying.

During a phase-0 study performed in 2005 at CNES, ONERA and in the laboratories, the critical subsystems of the optical payload have been investigated and a preliminary system integration has been performed. These subsystems are mostly the broadband (2.5-5 μm) nuller and the cophasing system (visible) dedicated to the real-time control of the OPD/tip/tilt inside the payload. A laboratory breadboard of the payload is under definition and should be built in 2007.
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F. Cassaing, J.-M. Le Duigou, B. Sorrente, B. Fleury, N. Gorius, F. Brachet, C. Buisset, M. Ollivier, F. Hénault, D. Mourard, Y. Rabbia, M. Delpech, P.-Y. Guidotti, A. Léger, M. Barillot, D. Rouan, and G. Rousset "Towards a laboratory breadboard for PEGASE, the DARWIN pathfinder", Proc. SPIE 10567, International Conference on Space Optics — ICSO 2006, 105670L (21 November 2017); https://doi.org/10.1117/12.2308162
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KEYWORDS
Nulling interferometry
Sensors
Stars
Mirrors
Polarization
Satellites
Calibration
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