Performance of the extreme-AO instrument VLT/SPHERE and dependence on the atmospheric conditions

J. Milli*, D. Mouillet, T. Fusco, J. H. Girard, E. Masciadri, E. Pena, J. F. Sauvage, C. Reyes, K. Dohlen, J. L. Beuzit, M. Kasper, M. Sarazin, F. Cantalloube

*Corresponding author for this work

Research output: Contribution to conferencePaper

15 Citations (Scopus)

Abstract

SPHERE is the high-contrast exoplanet imager and spectrograph installed at the Unit Telescope 3 of the Very Large Telescope. After more than two years of regular operations, we analyse statistically the performance of the adaptive optics system and its dependence on the atmospheric conditions above the Paranal observatory, as measured by the suite of dedicated instruments which are part of the Astronomical Site Monitor and as estimated by the SPHERE real-time calculator. We also explain how this information can be used to schedule the observations in order to yield the best data quality and to guide the astronomer when processing his/her data.

Conference

Conference5th Adaptive Optics for Extremely Large Telescopes, AO4ELT 2017
Abbreviated titleAO4ELT5
Country/TerritorySpain
CityTenerife, Canary Islands
Period25/06/1730/06/17
OtherThe fifth Adaptive Optics for Extremely Large Telescopes (AO4ELT5) meeting will be taking place in June 2017 at the Hotel Botánico in Puerto de la Cruz, Tenerife. One of the major challenges that face the future extremely large aperture telescopes (ELT's) is adaptive optics, and the goal of the meeting is to gather specialists to review and discuss the latest developments on this field. The topics of the conference include ELT’s current design in terms of AO systems, related instruments and science goals, and also pathfinder projects planned or implemented on existing telescopes, including solar telescopes, which provide relevant results for the next ELT’s design phase. Special attention will be given to new developments in several areas, such as mirrors, laser technologies, wavefront sensing and control, and new post-processing tools required to increase the image quality and increase the scientific return of the instruments.
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