The LATT way towards large active primaries for space telescopes

Runa Briguglio; Carmelo Arcidiacono; Marco Xompero; Franco Lisi; Armando Riccardi; Roberto Biasi; Christian Patauner; Daniele Gallieni; Paolo Lazzarini; Matteo Tintori; Francesco d'Amato; Mauro Pucci; Fabrizio Duò; Christian Vettore; Alessandro Zuccaro Marchi

doi:10.1117/12.2231712

29 July 2016 The LATT way towards large active primaries for space telescopes

Runa Briguglio, Carmelo Arcidiacono, Marco Xompero, Franco Lisi, Armando Riccardi, Roberto Biasi, Christian Patauner, Daniele Gallieni, Paolo Lazzarini, Matteo Tintori, Francesco d'Amato, Mauro Pucci, Fabrizio Duò, Christian Vettore, Alessandro Zuccaro Marchi

Author Affiliations +

Proceedings Volume 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave; 99041B (2016) https://doi.org/10.1117/12.2231712
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

The Large Aperture Telescope Technology (LATT) goes beyond the current paradigm of future space telescopes, based on a deformable mirror in the pupil relay. Through the LATT project we demonstrated the concept of a low-weight active primary mirror, whose working principle and control strategy benefit from two decades of advances in adaptive optics for ground-based telescopes. We developed a forty centimeter spherical mirror prototype, with an areal density lower than 17 kg/m², controlled through contactless voice coil actuators with co-located capacitive position sensors. The prototype was subjected to thermo-vacuum, vibration and optical tests, to push its technical readiness toward level 5. In this paper we present the background and the outcomes of the LATT activities under ESA contract (TRP programme), exploring the concept of a lightweight active primary mirror for space telescopes. Active primaries will open the way to very large segmented apertures, actively shaped, which can be lightweight, deployable and accurately phased once in flight.

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Runa Briguglio, Carmelo Arcidiacono, Marco Xompero, Franco Lisi, Armando Riccardi, Roberto Biasi, Christian Patauner, Daniele Gallieni, Paolo Lazzarini, Matteo Tintori, Francesco d'Amato, Mauro Pucci, Fabrizio Duò, Christian Vettore, and Alessandro Zuccaro Marchi "The LATT way towards large active primaries for space telescopes", Proc. SPIE 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, 99041B (29 July 2016); https://doi.org/10.1117/12.2231712

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