Year: 2021
Type: conference-paper
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.
Authors: Greggio, Davide, Di Filippo, Simone, Magrin, Demetrio, Schwab, Christian, Viotto, Valentina, Busoni, Lorenzo, Esposito, Simone, Ragazzoni, Roberto, Fusco, Thierry, Benoit, Neichel, Pinna, Enrico, Rigaut, Francois, Arcidiacono, Carmelo, Bergomi, Maria, Biondi, Federico, Chinellato, Simonetta, Farinato, Jacopo, Marafatto, Luca, Portaluri, Elisa, Radhakrishnan, Kalyan, Vassallo, Daniele
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W3097620445