Taylor, Brian W.Galla, AntonyGreggio, DavideAgapito, GuidoAliverti, MatteoBrodrick, DavidCranney, JesseGausachs, GastonHaguenauer, PierrePlantet, CédricStrobele, StefanViotto, ValentinaRigaut, François2025-05-232025-05-2397815106751790277-786XORCID:/0000-0003-2886-9341/work/184098211ORCID:/0000-0003-3490-7121/work/184104691http://www.scopus.com/inward/record.url?scp=85205558684&partnerID=8YFLogxKhttps://hdl.handle.net/1885/733752308The MCAO-Assisted Visible Imager and Spectrograph (MAVIS)1,2 is an instrument that will provide an unprecedented level of imaging and spectroscopy with the highest visible angular resolution provided by any ground or space-based telescope. Operating at a wavelength range of .370-.950 um, MAVIS will be installed on the Nasmyth platform A of the ESO Yepun one of the Very Large Telescopes (VLT) as a general-purpose instrument with an angular resolution two to three times better than that of the Hubble Space Telescope. MAVIS will take advantage of the 4 lasers in the VLT Adaptive Optics Facility (AOF) with an added upgrade of the facility. This upgrade splits each of four lasers into pairs that generate the eight laser guide stars (LGS) used to feed the wavefront sensors (WFS). The MAVIS LGS WFS carousel is situated in the MAVIS Adaptive Optics Modules (AOM) where the 589 nm laser light is split from the incoming beam before the instrument derotator. The LGS WFS module consists of a focuser to adjust for the altitude of the sodium layer and a rotating carousel that houses the eight LGS WFS. In this paper, we present the final design of the optical and mechanical components of the field derotating carousel, LGS WFS optics, and c ameras. We introduce the simulations and models that continue to constrain and improve the performance of the design.The MAVIS Astralis consortium nodes received funding under the Australian Government\u2019s National Collaborative Research Infrastructure Strategy (NCRIS) Program via Astronomy Australia Ltd (AAL). The MAVIS Italian nodes are supported by recurrent funds from INAF. The MAVIS hardware is funded by ESO, the Australian Research Council (through the LIEF grant LE220100037), NCRIS and the Australian National University, as well as a number of Australian Universities. This work benefited from support by the french government under the France 2030 investment plan, as part of the Initiative d\u2019Excellence d\u2019Aix-Marseille Universit\u00E9 AMIDEX (AMX-22-RE-AB-151) and the Action Sp\u00E9cifique Haute R\u00E9solution Angulaire (ASHRA) of CNRS/INSU.enPublisher Copyright: © 2024 SPIE.Adaptive OpticsDeformable Secondary MirrorsDeformable Secondary MirrorsIntegral Field SpectrographsIntegral Field SpectrographsLaser Guide StarsLaser Guide StarsMulti-Conjugate Adaptive OpticsMulti-Conjugate Adaptive OpticsPredictive ControlPredictive Control Adaptive OpticsTomographyTomographyVery Large TelescopeVery Large Telescope202410.1117/12.301976585205558684