Phase A AO system design and performance for MOSAIC at the ELT

Timothy Morris (1) , Alastair Basden (1) , Ariadna Calcines-Rosario (1) , Kjetil Dohlen (2) , Cornelis Dubbeldam (1) , Kacem El Hadi (2) , Ewan Fitzsimons (3) , Thierry Fusco (2, 4) , Eric Gendron (5) , Francois Hammer (6) , Pascal Jagourel (6) , David Jenkins (1) , Carine Morel (5) , Simon Morris (1) , Gérard Rousset (5) , Matthew Townson (1) , Pascal Vola (2) , Edward Younger (1)

1 Durham University
2 LAM - Laboratoire d'Astrophysique de Marseille
3 ISIS - ​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​ISIS Neutron and Muon Source
4 DOTA, ONERA, Université Paris Saclay (COmUE) [Châtillon]
5 LESIA (UMR_8109) - Laboratoire d'études spatiales et d'instrumentation en astrophysique
6 GEPI - Galaxies, Etoiles, Physique, Instrumentation

MOSAIC is a mixed-mode multiple object spectrograph planned for the ELT that uses a tiled focal plane to support a variety of observing modes. The MOSAIC AO system uses 4 LGS WFS and up to 4 NGS WFS positioned anywhere within the full 10 arcminute ELT field of view to control either the ELT M4/5 alone for GLAO operation feeding up to 200 targets in the focal plane, or M4/5 in conjunction with 10 open-loop DMs for MOAO correction. In this paper we present the overall design and performance of the MOSAIC GLAO and MOAO systems.

Mots clés: CONTROL SYSTEMS; DEFORMABLE MIRRORS; TOMOGRAPHY; ERROR ANALYSIS; CALIBRATION; ADAPTIVE OPTICS

Domaines: Sciences de l'ingénieur [physics]; Physique [physics]

Timothy Morris, Alastair Basden, Ariadna Calcines-Rosario, Kjetil Dohlen, Cornelis Dubbeldam, et al.. Phase A AO system design and performance for MOSAIC at the ELT. SPIE Astronomical Telescopes + Instrumentation, 2018, Jun 2018, Austin, United States. ⟨10.1117/12.2313562⟩. ⟨hal-02409306⟩