High contrast imaging with ELT/METIS: The wind driven halo, from SPHERE to METIS

• DOI: 10.48550/arxiv.1911.11241
• Publication Date: 2019-01-01
• Authors: F. Cantalloube; Olivier Absil; Thomas Bertram; W. Brandner; Christian Delacroix; M. Feldt; Matthew A. Kenworthy; Martin Kulas; J. Milli; Philip L. Neureuther; Orban de Xivry; Prashant Pathak; Emiel H. Por; Silvia Scheithauer; Horst Steuer; R. van Boekel
• Keywords: Metis

METIS is one of the three first-light instruments planned for ELT, mainly dedicated to high contrast imaging in mid-infrared. On SPHERE high-contrast instrument currently installed at VLT, we observe that main limitations wind driven halo, due limited AO running speed with respect atmospheric turbulence temporal evolution. From this observation, extrapolate signature ELT/METIS instrument, which equipped a single conjugated adaptive optics system and several coronagraphic devices. By making use an analytic simulator, compare amount halo observed METIS, under same conditions.