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Proceedings Paper

Fiber link for the FUEGOS multiobject spectrograph
Author(s): Jacques Baudrand; Martin Casse; Laurent Jocou; Jean-Pierre Lemonnier
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Paper Abstract

'FUEGOS' (Fibre Unit for European General Optical Spectroscopy) is one of the foreseen focal instrument for the future Europen VLT (Very Large Telescope). It is a multi-object spectrograph widely opened to stellar and extra-galactic programs. In the general concept of this instrument, the fibre link feeding the spectrograph slit from the telescope Nasmyth focus plays a major part. In addition to transporting light with maximum efficiency it is also asked to satisfy a set of very different specifications related to the spectrograph characteristics or to the particular conditions met at the VLT Nasmyth focus. We examine here the engineering solutions that were ultimately adopted and present the first results obtained with a fibre link prototype which was integrated with the help of a dedicated home- made instrumentation. More generally through this presentation, it will be demonstrated that fibre cables coupled with microlenses at both extremities could provide a simple and efficient solution for high resolution fibre fed spectrographs when it is possible to make use of the advantageous plate scale factor of large aperture telescopes.

Paper Details

Date Published: 1 June 1994
PDF: 12 pages
Proc. SPIE 2198, Instrumentation in Astronomy VIII, (1 June 1994); doi: 10.1117/12.176799
Show Author Affiliations
Jacques Baudrand, Observatoire de Paris-Meudon (France)
Martin Casse, Observatoire de Paris-Meudon (Germany)
Laurent Jocou, Observatoire de Paris-Meudon (France)
Jean-Pierre Lemonnier, Observatoire de Paris-Meudon (France)

Published in SPIE Proceedings Vol. 2198:
Instrumentation in Astronomy VIII
David L. Crawford; Eric R. Craine, Editor(s)

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