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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 17 — Aug. 21, 2006
  • pp: 7515–7534

High-order adaptive optics requirements for direct detection of extrasolar planets: Application to the SPHERE instrument

T. Fusco, G. Rousset, J.-F Sauvage, C. Petit, J.-L Beuzit, K. Dohlen, D. Mouillet, J. Charton, M. Nicolle, M. Kasper, P. Baudoz, and P. Puget  »View Author Affiliations


Optics Express, Vol. 14, Issue 17, pp. 7515-7534 (2006)
http://dx.doi.org/10.1364/OE.14.007515


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Abstract

The detection of extrasolar planets implies an extremely high-contrast, long-exposure imaging capability at near infrared and probably visible wavelengths. We present here the core of any Planet Finder instrument, that is, the extreme adaptive optics (XAO) subsystem. The level of AO correction directly impacts the exposure time required for planet detection. In addition, the capacity of the AO system to calibrate all the instrument static defects ultimately limits detectivity. Hence, the extreme AO system has to adjust for the perturbations induced by the atmospheric turbulence, as well as for the internal aberrations of the instrument itself. We propose a feasibility study for an extreme AO system in the frame of the SPHERE (Spectro-Polarimetry High-contrast Exoplanet Research) instrument, which is currently under design and should equip one of the four VLT 8-m telescopes in 2010.

© 2006 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(120.1880) Instrumentation, measurement, and metrology : Detection

ToC Category:
Focus Issue: Adaptive Optics

History
Original Manuscript: March 23, 2006
Revised Manuscript: June 20, 2006
Manuscript Accepted: June 20, 2006
Published: August 21, 2006

Citation
T. Fusco, G. Rousset, J.-F. Sauvage, C. Petit, J.-L. Beuzit, K. Dohlen, D. Mouillet, J. Charton, M. Nicolle, M. Kasper, P. Baudoz, and P. Puget, "High-order adaptive optics requirements for direct detection of extrasolar planets: Application to the SPHERE instrument," Opt. Express 14, 7515-7534 (2006)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-17-7515


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