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Proceedings Paper

The LATT way towards large active primaries for space telescopes
Author(s): 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
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Paper 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.

Paper Details

Date Published: 29 July 2016
PDF: 10 pages
Proc. SPIE 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, 99041B (29 July 2016); doi: 10.1117/12.2231712
Show Author Affiliations
Runa Briguglio, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Carmelo Arcidiacono, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Marco Xompero, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Franco Lisi, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Armando Riccardi, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Roberto Biasi, Microgate S.r.l. (Italy)
Christian Patauner, Microgate S.r.l. (Italy)
Daniele Gallieni, A.D.S. International S.r.l. (Italy)
Paolo Lazzarini, A.D.S. International S.r.l. (Italy)
Matteo Tintori, A.D.S. International S.r.l. (Italy)
Francesco d'Amato, Consiglio Nazionale delle Ricerche, Istituto Nazionale di Ottica (Italy)
Mauro Pucci, Consiglio Nazionale delle Ricerche, Istituto Nazionale di Ottica (Italy)
Fabrizio Duò, OHB CGS (Italy)
Christian Vettore, OHB CGS (Italy)
Alessandro Zuccaro Marchi, European Space Research and Technology Ctr. (Netherlands)


Published in SPIE Proceedings Vol. 9904:
Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave
Howard A. MacEwen; Giovanni G. Fazio; Makenzie Lystrup; Natalie Batalha; Nicholas Siegler; Edward C. Tong, Editor(s)

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