MAORY/MORFEO at ELT: preliminary design of the adaptive optics subsystem

Lorenzo Busoni; Guido Agapito; Cédric Plantet; Giulia Carlà; Sylvain Oberti; Marco Bonaglia; Tommaso Lapucci; Marco Xompero; Carmelo Arcidiacono; Zoltan Hubert; Patrick Rabou; Bernardo Salasnich; Andrea Baruffolo; Italo Foppiani; Giorgio Pariani; Matteo Munari; Demetrio Magrin; Marco Riva; Paolo Ciliegi

doi:10.1117/12.2629606

29 August 2022 MAORY/MORFEO at ELT: preliminary design of the adaptive optics subsystem

Lorenzo Busoni, Guido Agapito, Cédric Plantet, Giulia Carlà, Sylvain Oberti, Marco Bonaglia, Tommaso Lapucci, Marco Xompero, Carmelo Arcidiacono, Zoltan Hubert, Patrick Rabou, Bernardo Salasnich, Andrea Baruffolo, Italo Foppiani, Giorgio Pariani, Matteo Munari, Demetrio Magrin, Marco Riva, Paolo Ciliegi

Author Affiliations +

Proceedings Volume 12185, Adaptive Optics Systems VIII; 121854R (2022) https://doi.org/10.1117/12.2629606
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

Multiconjugate adaptive Optic Relay For ELT Observations (MORFEO, formerly known as MAORY) is the multiconjugate adaptive optics system of the ELT, providing a diffraction limited correction over a 60" field to the near infrared spectroimager MICADO; it recently completed the preliminary design phase. MORFEO's tomographic sensing is based on 12 WaveFront Sensors (WFS) working with 6 Laser Guide Stars (LGS) and 3 Natural Guide Star (NGS) and the wavefront correction is realized through the ELT's adaptive M4 and up to 2 post-focal deformable mirrors. Under median conditions, MORFEO will provide about 35% SR in K band with a 50% sky coverage at the galactic pole, and 55% SR in optimal conditions with a SR variation of ≤ 10% over a 60" corrected field. In this work we brie y summarize the key aspects of the AO system, focusing on the analysis that motivates the main design choices for wavefront sensors, deformable mirrors, real-time control and the many auxiliary loops envisaged to maintain an optimal and stable correction during the observation.

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Lorenzo Busoni, Guido Agapito, Cédric Plantet, Giulia Carlà, Sylvain Oberti, Marco Bonaglia, Tommaso Lapucci, Marco Xompero, Carmelo Arcidiacono, Zoltan Hubert, Patrick Rabou, Bernardo Salasnich, Andrea Baruffolo, Italo Foppiani, Giorgio Pariani, Matteo Munari, Demetrio Magrin, Marco Riva, and Paolo Ciliegi "MAORY/MORFEO at ELT: preliminary design of the adaptive optics subsystem", Proc. SPIE 12185, Adaptive Optics Systems VIII, 121854R (29 August 2022); https://doi.org/10.1117/12.2629606

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