The LATT way towards large active primaries for space telescopes

Date Issued
2016
Author(s)
•
•
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Lisi, Franco
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Biasi, Roberto
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Patauner, Christian
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Gallieni, Daniele
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Lazzarini, Paolo
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Tintori, Matteo
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d'Amato, Francesco
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Pucci, Mauro
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Duò, Fabrizio
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Vettore, Christian
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Zuccaro Marchi, Alessandro
DOI
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.
Coverage
Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave
All editors
MacEwen, Howard A.; Fazio, Giovanni G.; Lystrup, Makenzie; Batalha, Natalie; Siegler, Nicholas; Tong, Edward C.
Series
Volume
9904
Start page
99041B
Conferenece
Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave
Conferenece place
Edinburgh, United Kingdom
Conferenece date
26 June - 1 July 2016
Uri
Url
Issn Identifier
0277-786X
Ads BibCode
2016SPIE.9904E..1BB
Rights
open.access
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