Fiber link for the FUEGOS multiobject spectrograph

Jacques Baudrand; Martin Casse; Laurent Jocou; Jean-Pierre Lemonnier

doi:10.1117/12.176799

1 June 1994 Fiber link for the FUEGOS multiobject spectrograph

Jacques Baudrand, Martin Casse, Laurent Jocou, Jean-Pierre Lemonnier

Proceedings Volume 2198, Instrumentation in Astronomy VIII; (1994) https://doi.org/10.1117/12.176799
Event: 1994 Symposium on Astronomical Telescopes and Instrumentation for the 21st Century, 1994, Kailua, Kona, HI, United States

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.

Citation Download Citation

Jacques Baudrand, Martin Casse, Laurent Jocou, and Jean-Pierre Lemonnier "Fiber link for the FUEGOS multiobject spectrograph", Proc. SPIE 2198, Instrumentation in Astronomy VIII, (1 June 1994); https://doi.org/10.1117/12.176799

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