Fusco, T.T.FuscoSauvage, J. -F.J. -F.SauvageMouillet, D.D.MouilletCostille, A.A.CostillePetit, C.C.PetitBeuzit, J. -L.J. -L.BeuzitDohlen, K.K.DohlenMilli, J.J.MilliGirard, J.J.GirardKasper, M.M.KasperVigan, A.A.ViganSuarez, M.M.SuarezSoenke, C.C.SoenkeDowning, M.M.DowningN'Diaye, M.M.N'DiayeBaudoz, P.P.BaudozSevin, A.A.SevinBARUFFOLO, AndreaAndreaBARUFFOLOSchmid, H. -M.H. -M.SchmidSALASNICH, BernardoBernardoSALASNICHHugot, E.E.HugotHubin, N.N.Hubin2020-05-072020-05-072016978151060197097815106019870277-786Xhttp://hdl.handle.net/20.500.12386/24583The SPHERE (Spectro-Polarimetric High-contrast Exoplanet Research) instrument aims at detecting extremely faint sources (giant extrasolar planets) in the vicinity of bright stars<SUP>1</SUP>. Such a challenging goal requires the use of a very-high-order performance Adaptive Optics [AO] system feeding the scientific instruments with a quasi-perfect flat wave front corrected from all the atmospheric turbulence and internal defects. This AO system, called SAXO (Sphere Ao for eXoplanet Observation) is the heart of the instrument, a heart beating 1200 time per second and providing unprecedented image quality for a large ground based telescope at optical/near infrared wavelength. We will present the latest results obtained on-sky, demonstrating its exceptional performance (in terms of correction quality, stability and robustness) and tremendous potentiality for high contrast imaging and more specifically for exoplanet discovery.STAMPAenConference paper10.1117/12.22333192-s2.0-85002261149000387429700024https://www.spiedigitallibrary.org/conference-proceedings-of-spie/9909/1/SAXO-the-SPHERE-extreme-AO-system--on-sky-final/10.1117/12.2233319.short2016SPIE.9909E..0UFFIS/05 - ASTRONOMIA E ASTROFISICA