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Proceedings Article

The SOPHIE spectrograph: design and technical key-points for high throughput and high stability

[+] Author Affiliations
S. Perruchot, D. Kohler, Y. Richaud, P. Richaud, M. Merzougui, R. Sottile, L. Hill, G. Knispel, X. Regal, J.-P. Meunier, S. Ilovaisky, H. Le Coroller, D. Gillet, J. Schmitt, P. Vors, P. E. Blanc, C. Carol, A. Point, A. Laloge, J.-C. Brunel

CNRS-Observatoire de Haute-Provence (France)

F. Bouchy

CNRS-Institut d'Astrophysique de Paris (France)

G. Moreaux

CNRS-Lab. d'Astrophysique de Marseille (France)

F. Pepe, M. Fleury, D. Sosnowska, D. Mégevand

Observatoire de Genève, Univ. de Genève (Switzerland)

Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70140J (July 08, 2008); doi:10.1117/12.787379
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From Conference Volume 7014

  • Ground-based and Airborne Instrumentation for Astronomy II
  • Ian S. McLean; Mark M. Casali
  • Marseille, France | June 23, 2008

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.

© (2008) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

S. Perruchot ; D. Kohler ; F. Bouchy ; Y. Richaud ; P. Richaud, et al.
"The SOPHIE spectrograph: design and technical key-points for high throughput and high stability", Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70140J (July 08, 2008); doi:10.1117/12.787379; http://dx.doi.org/10.1117/12.787379


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