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Proceedings Paper

GOHSS: A MOS fiber-fed multi-echelle spectrograph in the near infrared (0.9-1.8 um)
Author(s): Dario Lorenzetti; Fausto Cortecchia; Francesco D'Alessio; Agostino Fiorani; Gianluca Li Causi; Dario Mancini; Roberto Scaramella; Roberto Speziali; Fabrizio Vitali
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Paper Abstract

We describe the current status and technical aspects of the GOHSS (Galileo OH Subtracted Spectrograph) project. Here we point out the most critical items and how we have implemented innovative technical solutions to fulfill the compelling requirements imposed by both the optical tolerances and the demands of a high sensitivity. In particular we examine the camera lens mechanics realized in ultra low expansion quartz; the refrigerator system; the IR array mount realized in an unconventional way; the effort put in procuring optical devices with quite large efficiencies. We are also developing the data reduction package along with the instrument simulator: the optimized procedures and the results on the visibility function of galaxies are given as well. Currently the instrument is in the integration phase at the laboratories of the Astronomical Observatory of Rome and the commissioning phase at the telescope is expected to start at the beginning of year 2003.

Paper Details

Date Published: 7 March 2003
PDF: 12 pages
Proc. SPIE 4841, Instrument Design and Performance for Optical/Infrared Ground-based Telescopes, (7 March 2003); doi: 10.1117/12.458948
Show Author Affiliations
Dario Lorenzetti, Osservatorio Astronomico di Roma-INAF (Italy)
Fausto Cortecchia, Osservatorio Astronomico di Capodimonte-INAF (Italy)
Francesco D'Alessio, Osservatorio Astronomico di Roma-INAF (Italy)
Agostino Fiorani, Osservatorio Astronomico di Roma-INAF (Italy)
Gianluca Li Causi, Osservatorio Astronomico di Roma-INAF (Italy)
Dario Mancini, Osservatorio Astronomico di Capodimonte-INAF (Italy)
Roberto Scaramella, Osservatorio Astronomico di Roma-INAF (Italy)
Roberto Speziali, Osservatorio Astronomico di Roma-INAF (Italy)
Fabrizio Vitali, Osservatorio Astronomico di Roma-INAF (Italy)

Published in SPIE Proceedings Vol. 4841:
Instrument Design and Performance for Optical/Infrared Ground-based Telescopes
Masanori Iye; Alan F. M. Moorwood, Editor(s)

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