DICOS: a demonstrator of advanced active optics and fine pointing techniques for future space-based missions

J. M. Le Duigou; L. Bernard; M. Castelnau; C. A. Chevrier; M. Clavery; J. Evrard; F. Gant; F. Henault; L. Marelli; F. Mirc; J. Montel; A. Laurens; A. Peus; A. Rafflegeau; B. Regnier; C. Latry

doi:10.1117/12.2629986

27 August 2022 DICOS: a demonstrator of advanced active optics and fine pointing techniques for future space-based missions

J. M. Le Duigou, L. Bernard, M. Castelnau, C. A. Chevrier, M. Clavery, J. Evrard, F. Gant, F. Henault, L. Marelli, F. Mirc, J. Montel, A. Laurens, A. Peus, A. Rafflegeau, B. Regnier, C. Latry

Author Affiliations +

Proceedings Volume 12180, Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave; 1218058 (2022) https://doi.org/10.1117/12.2629986
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

DICOS is a technological demonstrator under a stratospheric balloon for advanced pointing and wavefront stability technologies. The aim is to reach 10 mas fine pointing and 20 nm rms wavefront error (WFE), with 1 nm rms stability. The sizing case comes from the coronography technique for exoplanets direct detection. The instrument is based on a 40 cm telescope made in aluminum and mounted in a CARMEN gondola. The deformations and pointing errors are compensated by active loops driving a deformable mirror (DM) with 97 actuators. The current funded phase of the project will end in 2024 by a full-scale ground demonstration.

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J. M. Le Duigou, L. Bernard, M. Castelnau, C. A. Chevrier, M. Clavery, J. Evrard, F. Gant, F. Henault, L. Marelli, F. Mirc, J. Montel, A. Laurens, A. Peus, A. Rafflegeau, B. Regnier, and C. Latry "DICOS: a demonstrator of advanced active optics and fine pointing techniques for future space-based missions", Proc. SPIE 12180, Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave, 1218058 (27 August 2022); https://doi.org/10.1117/12.2629986

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