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Proceedings Paper

Design of the opto-mechanical mounts of the ESPRESSO spectograph
Author(s): Samuel Santana Tschudi; A. Fragoso; M. Amate; R. Rebolo; D. Mégevand; F. M. Zerbi; F. Pepe
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Paper Abstract

ESPRESSO is the next generation European exoplanet hunter, combining the efficiency of a modern echelle spectrograph with extreme radial velocity and spectroscopic precision. The instrumental radial velocity precision will be improved to reach 10 cm/s level, to achieve a gain of two magnitudes with respect to its predecessor HARPS. The fiber-fed, non-rotating instrument will be installed in the Combined Coudé Laboratory of the VLT (Very Large Telescope), which is situated in the Paranal Observatory (Chile). The main challenge in the design of the optical mounts of the instrument has been the extreme long-term stability of big rectangular optical components in a seismic environment. This paper describes the requirements and the adopted solution for the opto-mechanical design of the collimator mirrors, dichroic lens, field lens and cross dispersers of the instrument.

Paper Details

Date Published: 28 July 2014
PDF: 10 pages
Proc. SPIE 9151, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, 915153 (28 July 2014); doi: 10.1117/12.2056952
Show Author Affiliations
Samuel Santana Tschudi, Instituto de Astrofísica de Canarias (Spain)
A. Fragoso, Instituto de Astrofísica de Canarias (Spain)
M. Amate, Instituto de Astrofísica de Canarias (Spain)
R. Rebolo, Instituto de Astrofísica de Canarias (Spain)
D. Mégevand, Observatoire de Genève, Univ. de Genève (Switzerland)
F. M. Zerbi, INAF - Osservatorio Astronomico di Brera (Italy)
F. Pepe, Observatoire de Genève, Univ. de Genève (Switzerland)


Published in SPIE Proceedings Vol. 9151:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation
Ramón Navarro; Colin R. Cunningham; Allison A. Barto, Editor(s)

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