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

Timothy Morris,Alastair Basden, Ariadna Calcines-Rosario,Kjetil Dohlen,Cornelis Dubbeldam,Kacem El Hadi, Ewan Fitzsimons,Thierry Fusco,Eric Gendron,Francois Hammer,Pascal Jagourel,David Jenkins,Carine Morel,Simon Morris,Gerard Rousset,Matthew Townson, Pascal Vola, Edward Younger

ADAPTIVE OPTICS SYSTEMS VI（2018）

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摘要

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.

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关键词

Adaptive Optics,Laser Guide Star,Natural Guide Star,Multiple Object Adaptive Optics,Ground Layer Adaptive Optics,Wavefront Tomography,Multiple Object Spectroscopy

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