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Proceedings Paper

The SOPHIE spectrograph: design and technical key-points for high throughput and high stability
Author(s): S. Perruchot; D. Kohler; F. Bouchy; Y. Richaud; P. Richaud; G. Moreaux; M. Merzougui; R. Sottile; L. Hill; G. Knispel; X. Regal; J.-P. Meunier; S. Ilovaisky; H. Le Coroller; D. Gillet; J. Schmitt; F. Pepe; M. Fleury; D. Sosnowska; P. Vors; D. Mégevand; P. E. Blanc; C. Carol; A. Point; A. Laloge; J.-C. Brunel
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Paper Abstract

SOPHIE is a new fiber-fed echelle spectrograph in operation since October 2006 at the 1.93-m telescope of Observatoire de Haute-Provence. Benefiting from experience acquired on HARPS (3.6-m ESO), SOPHIE was designed to obtain accurate radial velocities (~3 m/s over several months) with much higher optical throughput than ELODIE (by a factor of 10). These enhanced capabilities have actually been achieved and have proved invaluable in asteroseismology and exoplanetology. We present here the optical concept, a double-pass Schmidt echelle spectrograph associated with a high efficiency coupling fiber system, and including simultaneous wavelength calibration. Stability of the projected spectrum has been obtained by the encapsulation of the dispersive components in a constant pressure tank. The main characteristics of the instrument are described. We also give some technical details used in reaching this high level of performance.

Paper Details

Date Published: 9 July 2008
PDF: 12 pages
Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70140J (9 July 2008); doi: 10.1117/12.787379
Show Author Affiliations
S. Perruchot, CNRS-Observatoire de Haute-Provence (France)
D. Kohler, CNRS-Observatoire de Haute-Provence (France)
F. Bouchy, CNRS-Institut d'Astrophysique de Paris (France)
Y. Richaud, CNRS-Observatoire de Haute-Provence (France)
P. Richaud, CNRS-Observatoire de Haute-Provence (France)
G. Moreaux, CNRS-Lab. d'Astrophysique de Marseille (France)
M. Merzougui, CNRS-Observatoire de Haute-Provence (France)
R. Sottile, CNRS-Observatoire de Haute-Provence (France)
L. Hill, CNRS-Observatoire de Haute-Provence (France)
G. Knispel, CNRS-Observatoire de Haute-Provence (France)
X. Regal, CNRS-Observatoire de Haute-Provence (France)
J.-P. Meunier, CNRS-Observatoire de Haute-Provence (France)
S. Ilovaisky, CNRS-Observatoire de Haute-Provence (France)
H. Le Coroller, CNRS-Observatoire de Haute-Provence (France)
D. Gillet, CNRS-Observatoire de Haute-Provence (France)
J. Schmitt, CNRS-Observatoire de Haute-Provence (France)
F. Pepe, Observatoire de Genève, Univ. de Genève (Switzerland)
M. Fleury, Observatoire de Genève, Univ. de Genève (Switzerland)
D. Sosnowska, Observatoire de Genève, Univ. de Genève (Switzerland)
P. Vors, CNRS-Observatoire de Haute-Provence (France)
D. Mégevand, Observatoire de Genève, Univ. de Genève (Switzerland)
P. E. Blanc, CNRS-Observatoire de Haute-Provence (France)
C. Carol, CNRS-Observatoire de Haute-Provence (France)
A. Point, CNRS-Observatoire de Haute-Provence (France)
A. Laloge, CNRS-Observatoire de Haute-Provence (France)
J.-C. Brunel, CNRS-Observatoire de Haute-Provence (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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