MAVIS Adaptive Optics Module: optical configuration and expected performance

Davide Greggio*, Brian Taylor, Marco Bonaglia, Valentina Viotto, Maria Bergomi, Enrico Pinna, Guido Agapito, Stefan Ströbele, Matteo Aliverti, Kalyan Radhakrishnan, Christian Schwab, Jesse Cranney, Israel Vaughn, Luca Marafatto, Demetrio Magrin, David Brodrick, Simonetta Chinellato, François Rigaut

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Citations (Scopus)

Abstract

The MCAO Assisted Visible Imager and Spectrograph (MAVIS) is currently in preliminary design for the ESO VLT. The instrument will provide multi-conjugate adaptive optics correction over a wide field of 30”x30”, feeding the visible part of the spectrum (from 370 to 1000nm) to an imager and a spectrograph. The Adaptive Optics Module (AOM) of MAVIS implements two deformable mirrors, composed by more than 2000 actuators each, and includes a Laser Guide Star (LGS) and a Natural Guide Star (NGS) wavefront sensor for the tomographic reconstruction and correction of the atmospheric turbulence. Moreover, it provides other key functionalities like atmospheric dispersion compensation and field de-rotation, delivering a corrected diffraction-limited 30”x30” focal plane to three output ports: one for the imager, one for the spectrograph and one for visiting instruments. In this paper we describe the current optical configuration of the AOM, and we report the results of the analyses conducted to evaluate the expected optical performance of the system. The analyses include simulations for the manufacturing and alignment tolerances, sensitivity to mid-spatial frequency figure errors and their impact to astrometry.

Original languageEnglish
Title of host publicationAdaptive Optics Systems VIII
EditorsLaura Schreiber, Dirk Schmidt, Elise Vernet
PublisherSPIE
Pages1-13
Number of pages13
Volume12185
ISBN (Electronic)9781510653511
DOIs
Publication statusPublished - 2022
EventAdaptive Optics Systems VIII 2022 - Montreal, Canada
Duration: 17 Jul 202222 Jul 2022

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12185
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceAdaptive Optics Systems VIII 2022
Country/TerritoryCanada
CityMontreal
Period17/07/2222/07/22

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