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Proceedings Paper

ESPRESSO front end: modular opto-mechanical integration for astronomical instrumentation
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Paper Abstract

The opto-mechanical conceptual design for the Front-End unit and the calibration unit of the ESPRESSO Spectrograph is described in this paper. The front end system exploits a modular concept. Each FEU receive the beam directly from the relative Telescope Coudé Train and the calibration light from the calibration unit. On the other side the FEU feeds the fibers that carry the light to the spectrograph, corresponding in number and size to the scientific observing modes conceived for Espresso. The selection is made through a Toggling Unit. Purpose of the Front/End is to provide the needed connection between the input signal, i.e. Object light, Sky light, Calibration light, and the given output fiber in any of the foreseen observing modes.

Paper Details

Date Published: 28 July 2014
PDF: 9 pages
Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91477G (28 July 2014); doi: 10.1117/12.2056499
Show Author Affiliations
M. Riva, INAF - Osservatorio Astronomico di Brera (Italy)
Matteo Aliverti, INAF - Osservatorio Astronomico di Brera (Italy)
Manuele Moschetti, INAF - Osservatorio Astronomico di Brera (Italy)
M. Landoni, INAF - Osservatorio Astronomico di Brera (Italy)
S. Dell'Agostino, INAF - Osservatorio Astronomico di Brera (Italy)
F. Pepe, Observatoire de Genève, Univ. de Genève (Switzerland)
D. Mégevand, Observatoire de Genève, Univ. de Genève (Switzerland)
F. M. Zerbi, INAF - Osservatorio Astronomico di Brera (Italy)
S. Cristiani, INAF - Osservatorio Astronomico di Trieste (Italy)
A. Cabral, Univ. de Lisboa (Portugal)


Published in SPIE Proceedings Vol. 9147:
Ground-based and Airborne Instrumentation for Astronomy V
Suzanne K. Ramsay; Ian S. McLean; Hideki Takami, Editor(s)

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