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Proceedings Paper

Bidimensional spectroscopy with optical fibers at the William Herschel and Nordic Optical Telescopes
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Paper Abstract

In this communication we describe two optical fiber systems contrived to perform simultaneous bidimensional spectroscopy of extended objects: 2D_FIS and HEXAFLEX II. The main component of 2D_FIS is an optical fiber bundle which links the auxiliary Cassegrain focus of the 4.2 m William Herschel Telescope (WHT) with the ISIS spectrograph. HEXAFLEX II has been designed for the Cassegrain focus of the 2.5 m Nordic Optical Telescope (NOT) and it uses the FLEX spectrograph. Both telescopes are at the Observatorio del Roque de los Muchachos, on the island of La Palma. The basic component, the fiber bundle, is similar in both systems although each one is adapted to the particular characteristics of the corresponding spectrograph and telescope. Each one of the bundles is composed of 125 fibers: 95 to observe the object and 30 to obtain the sky background signal. Details of the acquisition procedures are provided. These systems have been tested at the telescope with success. Some examples of results on astronomical objects are shown.

Paper Details

Date Published: 1 June 1994
PDF: 12 pages
Proc. SPIE 2198, Instrumentation in Astronomy VIII, (1 June 1994); doi: 10.1117/12.176806
Show Author Affiliations
Adolfo A. Garcia, Instituto de Astrofisica de Canarias (Spain)
Jose Luis Rasilla, Instituto de Astrofisica de Canarias (Spain)
Santiago Arribas, Instituto de Astrofisica de Canarias (United States)
E. Mediavilla, Instituto de Astrofisica de Canarias (Spain)

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

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