Translator Disclaimer
13 September 2012 The SPHERE XAO system SAXO: integration, test, and laboratory performance
Author Affiliations +
Direct detection and spectral characterization of extra-solar planets is one of the most exciting and challenging areas in modern astronomy due to the very large contrast between the host star and the planet at very small angular separations. SPHERE (Spectro-Polarimetric High-contrast Exoplanet Research in Europe) is a second-generation instrument for the ESO VLT dedicated to this scientific objective. It combines an extreme adaptive optics system, various coronagraphic devices and a suite of focal instruments providing imaging, integral field spectroscopy and polarimetry capabilities in the visible and near-infrared spectral ranges. The extreme Adaptive Optics (AO) system, SAXO, is the heart of the SPHERE system, providing to the scientific instruments a flat wavefront corrected from all the atmospheric turbulence and internal defects. We present an updated analysis of SAXO assembly, integration and performance. This integration has been defined in a two step process. While first step is now over and second one is ongoing, we propose a global overview of integration results. The main requirements and system characteristics are briefly recalled, then each sub system is presented and characterized. Finally the full AO loop first performance is assessed. First results demonstrate that SAXO shall meet its challenging requirements.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
C. Petit, J.-F. Sauvage, A. Sevin, A. Costille, T. Fusco, P. Baudoz, J.-L. Beuzit, T. Buey, J. Charton, K. Dohlen, P. Feautrier, E. Fedrigo, J.-L. Gach, N. Hubin, E. Hugot, M. Kasper, D. Mouillet, D. Perret, P. Puget, J.-C. Sinquin, C. Soenke, M. Suarez, and F. Wildi "The SPHERE XAO system SAXO: integration, test, and laboratory performance", Proc. SPIE 8447, Adaptive Optics Systems III, 84471Z (13 September 2012);


Wave front sensor strategies for SPHERE first on sky...
Proceedings of SPIE (November 14 2014)
The V-SHARK high contrast imager at LBT
Proceedings of SPIE (August 09 2016)
Sparse aperture masking with SPHERE
Proceedings of SPIE (August 04 2016)
Actuator requirements for laser power beaming
Proceedings of SPIE (May 01 1994)
Image quality and high contrast improvements on VLT/NACO
Proceedings of SPIE (September 13 2012)

Back to Top