Extreme adaptive optics coronagraphy with the high-order test bench in the context of the SPHERE instrument

Patrice Martinez; Emmanuel Aller Carpentier; Markus Kasper

doi:10.1117/12.857145

28 July 2010 Extreme adaptive optics coronagraphy with the high-order test bench in the context of the SPHERE instrument

Patrice Martinez, Emmanuel Aller Carpentier, Markus Kasper

Author Affiliations +

Proceedings Volume 7736, Adaptive Optics Systems II; 77361L (2010) https://doi.org/10.1117/12.857145
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

Extreme adaptive optics systems (XAO) dedicated to the search for extrasolar planets are currently being developed for 8-10 meter telescopes. The High-Order Test bench (HOT) is a high-contrast imaging adaptive optics bench developed at the European Southern Observatory to test and optimize different techniques and technologies (e.g. wavefront sensors, coronagraphs, speckle calibration methods, image post-processing). It reproduces realistic conditions at a telescope (e.g. Very Large Telescope, VLT), including a turbulence generator, a high-order adaptive optics system, a near-IR coronagraph, and sequential differential imaging modes (spectral and polarimetric). We discuss the results of XAO coronagraphy obtained in the laboratory in the context of imminent planet-finder instruments (e.g. SPHERE¹, GPI², and HiCIAO³). In particular, results obtained with HOT will be discussed and compared with contrast goals of the near-IR camera of SPHERE.

Citation Download Citation

Patrice Martinez, Emmanuel Aller Carpentier, and Markus Kasper "Extreme adaptive optics coronagraphy with the high-order test bench in the context of the SPHERE instrument", Proc. SPIE 7736, Adaptive Optics Systems II, 77361L (28 July 2010); https://doi.org/10.1117/12.857145

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