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27 June 2006 Design of the extreme AO system for SPHERE, the planet finder instrument of the VLT
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The SPHERE system aims at the detection of extremely faint sources (giant extra-solar planet) in the vinicity of bright stars. Such a challenging goal automatically requires the use of a coronagraphic device to cancel out the flux coming from the star and smart imaging technics which have to be added to reach the required contrast for exo-planet detection (typically 10-6 - 10-7 in contrast). In this frame of the SPHERE project a global system study has demonstrated the feasibility of an AO system for the direct exoplanets detection. A detailed description of this system is proposed in this paper. The main trade-offs are discussed and justified and all the subsystems briefly presented. The realization phase has begun in 2006 and we foresee to obtain a first light at the VLT in 2010.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
T. Fusco, C. Petit, G. Rousset, J.-F. Sauvage, K. Dohlen, D. Mouillet, J. Charton, P. Baudoz, M. Kasper, E. Fedrigo, P. Rabou, P. Feautrier, M. Downing, P. Gigan, J.-M. Conan, J.-L. Beuzit, N. Hubin, F. Wildi, and P. Puget "Design of the extreme AO system for SPHERE, the planet finder instrument of the VLT", Proc. SPIE 6272, Advances in Adaptive Optics II, 62720K (27 June 2006); doi: 10.1117/12.670794;


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