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

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

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


Kjetil Dohlen

Kacem El Hadi

Ewan Fitzsimons

Thierry Fusco

Éric Gendron

François Hammer

Pascal Jagourel

David Jenkins

Carine Morel

Gérard Rousset

Pascal Vola

Edward Younger


Laird M. Close

Laura Schreiber

Dirk Schmidt


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.


Morris, T., Basden, A., Calcines-Rosario, A., Dohlen, K., Dubbeldam, C., El Hadi, K., …Younger, E. (2018). Phase A AO system design and performance for MOSAIC at the ELT. In L. M. Close, L. Schreiber, & D. Schmidt (Eds.), Proceedings Volume 10703, Adaptive Optics Systems VI.

Conference Name Adaptive Optics Systems VI: SPIE Astronomical Telescopes + Instrumentation 2018
Conference Location Austin, Texas
Start Date Jun 10, 2018
End Date Jun 15, 2018
Online Publication Date Jul 13, 2018
Publication Date 2018
Deposit Date Sep 25, 2018
Publicly Available Date Jan 17, 2023
Publisher SPIE
Volume 10703
Book Title Proceedings Volume 10703, Adaptive Optics Systems VI
ISBN 9781510619593
Public URL


Published Conference Proceeding (1.3 Mb)

Copyright Statement
Copyright (2018) Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

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