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Proceedings Paper

Prototyping of differential optics for the SPHERE IRDIS dual imaging planet finder camera
Author(s): Kjetil Dohlen; Michel Saisse; Alain Origne; Gabriel Moreaux; Christophe Fabron; Frederic Zamkotsian; Patrick Lanzoni; Frederic Lemarquis
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Paper Abstract

The SPHERE (Spectro-Polarimetric High-contrast Exoplanet Research) planet finder instrument for ESO's VLT telescope, scheduled for first light in 2011, aims to detect giant extra-solar planets in the vicinity of bright stars by the aid of an extreme-AO turbulence compensation system and to characterize the objects found through spectroscopic and polarimetric observations. Dual imaging observations within the Y, J, H and Ks atmospheric windows (~0.95 - 2.32μm) will be done by the aid of the IRDIS cryogenic camera. Ensuring sufficiently low level of differential aberrations between the two parallel images is a major concern for this instrument. We describe the prototyping efforts made in order to validate our concept.

Paper Details

Date Published: 25 July 2008
PDF: 11 pages
Proc. SPIE 7018, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation, 701859 (25 July 2008); doi: 10.1117/12.789877
Show Author Affiliations
Kjetil Dohlen, Lab. d'Astrophysique de Marseille, CNRS, Univ. de Provence (France)
Michel Saisse, Lab. d'Astrophysique de Marseille, CNRS, Univ. de Provence (France)
Alain Origne, Lab. d'Astrophysique de Marseille, CNRS, Univ. de Provence (France)
Gabriel Moreaux, Lab. d'Astrophysique de Marseille, CNRS, Univ. de Provence (France)
Christophe Fabron, Lab. d'Astrophysique de Marseille, CNRS, Univ. de Provence (France)
Frederic Zamkotsian, Lab. d'Astrophysique de Marseille, CNRS, Univ. de Provence (France)
Patrick Lanzoni, Lab. d'Astrophysique de Marseille, CNRS, Univ. de Provence (France)
Frederic Lemarquis, Institut Fresnel, CNRS, Domaine Univ. de Saint-Jérôme (France)


Published in SPIE Proceedings Vol. 7018:
Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation
Eli Atad-Ettedgui; Dietrich Lemke, Editor(s)

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