Optical design trade-off study for the AO module of MAVIS

D. Greggio, S. Di Filippo, D. Magrin, C. Schwab, V. Viotto, L. Busoni, S. Esposito, R. Ragazzoni, T. Fusco, N. Benoit, E. Pinna, F. Rigaut, C. Arcidiacono, M. Bergomi, F. Biondi, S. Chinellato, J. Farinato, L. Marafatto, E. Portaluri, K. K. R. Santhakumari & 1 others D. Vassallo

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

Abstract

MAVIS (MCAO-Assisted Visible Imager and Spectrograph) is an instrument proposed for the VLT Adaptive Optics Facility (AOF), which is currently in the phase-A conceptual design study. It will be the first instrument performing Multi-conjugate adaptive optics at visible wavelengths, enabling a new set of science observations. MAVIS will be installed at the Nasmyth platform of VLT UT-4 taking advantage of the already operational Adaptive Optics Facility that consists of 4 LGS and an adaptive secondary mirror with 1170 actuators. In addition, two post-focal deformable mirrors and 3 Natural Guide Stars (NGS) are foreseen for the tomographic reconstruction and correction of atmospheric turbulence.

The MAVIS AO module is intended to feed both an imager and a spectrograph that will take advantage of the increased resolution and depth with respect to current instrumentation.

In this paper we present the trade-off study for the optical design of the MAVIS AO module, highlighting the peculiarities of the system and the requirements imposed by AO. We propose a set of possible optical solutions able to provide a compact and efficient implementation of the different subsystems and we compare them in terms of delivered optical quality, overall throughput, encumbrance, ease of alignment and residual distortion.

Original languageEnglish
Title of host publicationAO4ELT6
Subtitle of host publicationProceedings of the 6th International Conference on Adaptive Optics for Extremely Large Telescopes
Place of PublicationQuebec
Number of pages9
Publication statusPublished - Jun 2019
Event6th International Conference on Adaptive Optics for Extremely Large Telescopes, AO4ELT 2019 - Quebec City, Canada
Duration: 9 Jun 201914 Jun 2019

Conference

Conference6th International Conference on Adaptive Optics for Extremely Large Telescopes, AO4ELT 2019
CountryCanada
CityQuebec City
Period9/06/1914/06/19

Keywords

  • Design optimization
  • MAVIS
  • MCAO
  • Optical design
  • Relay optics
  • Visible adaptive optics
  • VLT

Fingerprint Dive into the research topics of 'Optical design trade-off study for the AO module of MAVIS'. Together they form a unique fingerprint.

Cite this