ELT M4 adaptive unit ready for integration

Roberto Biasi; Mario Andrighettoni; Gerald Angerer; Andrea Atzeni; Maurizio Groppi; Mauro Manetti; Dietrich Pescoller; Daniele Gallieni; Enzo Anaclerio; Lorenzo Crimella; Pierluigi Fumi; Matteo Tintori; Elise Vernet; Marc Cayrel; Aglae Kellerer; Paul Lilley; Pablo Zuluaga-Ramírez; Pavel Kravez; Runa Briguglio; Marco Xompero; Giorgio Pariani; Armando Riccardi; Chiara Selmi; Nicolò Azzaroli

doi:10.1117/12.2562913

13 December 2020 ELT M4 adaptive unit ready for integration

Roberto Biasi, Mario Andrighettoni, Gerald Angerer, Andrea Atzeni, Maurizio Groppi, Mauro Manetti, Dietrich Pescoller, Daniele Gallieni, Enzo Anaclerio, Lorenzo Crimella, Pierluigi Fumi, Matteo Tintori, Elise Vernet, Marc Cayrel, Aglae Kellerer, Paul Lilley, Pablo Zuluaga-Ramírez, Pavel Kravez, Runa Briguglio, Marco Xompero, Giorgio Pariani, Armando Riccardi, Chiara Selmi, Nicolò Azzaroli

Author Affiliations +

Proceedings Volume 11445, Ground-based and Airborne Telescopes VIII; 114453T (2020) https://doi.org/10.1117/12.2562913
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

The ELT M4 is the telescope-facility adaptive unit for the European ELT. Final design and construction were awarded in 2015 to AdOptica, a consortium of Microgate and ADS International; on-site delivery is planned for 2024. The unit is based on a monolithic, structural reference body manufactured by Mersen Boostec. The flat thin mirror, controlled using the contactless voice-coil-motor based technology, is split in 6 segments produced by Safran Reosc. The M4 unit is ready for integration: we report here the results of the construction and component level testing, introducing also the forthcoming integration and system-level tests.

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Roberto Biasi, Mario Andrighettoni, Gerald Angerer, Andrea Atzeni, Maurizio Groppi, Mauro Manetti, Dietrich Pescoller, Daniele Gallieni, Enzo Anaclerio, Lorenzo Crimella, Pierluigi Fumi, Matteo Tintori, Elise Vernet, Marc Cayrel, Aglae Kellerer, Paul Lilley, Pablo Zuluaga-Ramírez, Pavel Kravez, Runa Briguglio, Marco Xompero, Giorgio Pariani, Armando Riccardi, Chiara Selmi, and Nicolò Azzaroli "ELT M4 adaptive unit ready for integration", Proc. SPIE 11445, Ground-based and Airborne Telescopes VIII, 114453T (13 December 2020); https://doi.org/10.1117/12.2562913

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