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Proceedings Paper

SPHERE-IFS arm: a new concept of Nasmyth II generation instrumentation for ESO-VLT
Author(s): V. De Caprio; P. Bruno; E. Cascone; S. Scuderi; R. Claudi; R. G. Gratton; E. Giro; J. Antichi; S. Desidera; M. Tintori; D. Mesa; E. Stadler; M. Turatto; J. L. Beuzit
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Paper Abstract

Direct detection and spectral characterization of Extrasolar Planets is one of the most exciting but also one of the most challenging areas in modern astronomy. For the second-generation instrumentation on the VLT, ESO has supported the study and the design of instrument, called SPHERE (Spectro-Polarimetric High-contrast Exoplanet Research). SPHERE includes a powerful extreme adaptive optics system, various coronagraphs, an infrared differential imaging camera (IRDIS), an infrared Integral Field Spectrograph (IFS) and a visible differential polarimeter (ZIMPOL). IFS is a very low resolution spectrograph (R~50) which works in the near IR (0.95-1.7 microns), an ideal wavelength range for the ground based detection of planetary features. The IFS requirements have been met via an innovative integrated design merging passive stiffness and active control to obtain a light, accessible and functional assembly. This paper gives a description of its cryogenic and mechatronic integrated design.

Paper Details

Date Published: 9 July 2008
PDF: 10 pages
Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70143G (9 July 2008); doi: 10.1117/12.789420
Show Author Affiliations
V. De Caprio, INAF - Istituto di Astrofisica Spaziale e Fisica Cosmica (Italy)
P. Bruno, INAF - Astrophysical Observatory of Catania (Italy)
E. Cascone, INAF - Astronomical Observatory of Napoli (Italy)
S. Scuderi, INAF - Astrophysical Observatory of Catania (Italy)
R. Claudi, INAF - Astronomical Observatory of Padova (Italy)
R. G. Gratton, INAF - Astronomical Observatory of Padova (Italy)
E. Giro, INAF - Astronomical Observatory of Padova (Italy)
J. Antichi, INAF - Astronomical Observatory of Padova (Italy)
S. Desidera, INAF - Astronomical Observatory of Padova (Italy)
M. Tintori, Politecnico di Milano (Italy)
D. Mesa, INAF - Astronomical Observatory of Padova (Italy)
E. Stadler, Lab. d'Astrophysique de l'Observatoire de Grenoble (France)
M. Turatto, INAF-Astrophysical Observatory of Catania (Italy)
J. L. Beuzit, Lab. d'Astrophysique de l'Observatoire de Grenoble (France)


Published in SPIE Proceedings Vol. 7014:
Ground-based and Airborne Instrumentation for Astronomy II
Ian S. McLean; Mark M. Casali, Editor(s)

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