26 July 2016 SAXO, the SPHERE extreme AO system: on-sky final performance and future improvements
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Abstract
The SPHERE (Spectro-Polarimetric High-contrast Exoplanet Research) instrument aims at detecting extremely faint sources (giant extrasolar planets) in the vicinity of bright stars1. 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.
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T. Fusco, J.-F. Sauvage, D. Mouillet, A. Costille, C. Petit, J.-L. Beuzit, K. Dohlen, J. Milli, J. Girard, M. Kasper, A. Vigan, M. Suarez, C. Soenke, M. Downing, M. N'Diaye, P. Baudoz, A. Sevin, A. Baruffolo, H.-M. Schmid, B. Salasnich, E. Hugot, N. Hubin, "SAXO, the SPHERE extreme AO system: on-sky final performance and future improvements", Proc. SPIE 9909, Adaptive Optics Systems V, 99090U (26 July 2016); doi: 10.1117/12.2233319; https://doi.org/10.1117/12.2233319
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