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

Adolfo A. Garcia; Jose Luis Rasilla; Santiago Arribas; E. Mediavilla

doi:10.1117/12.176806

1 June 1994 Bidimensional spectroscopy with optical fibers at the William Herschel and Nordic Optical Telescopes

Adolfo A. Garcia, Jose Luis Rasilla, Santiago Arribas, E. Mediavilla

Proceedings Volume 2198, Instrumentation in Astronomy VIII; (1994) https://doi.org/10.1117/12.176806
Event: 1994 Symposium on Astronomical Telescopes and Instrumentation for the 21st Century, 1994, Kailua, Kona, HI, United States

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.

Citation Download Citation

Adolfo A. Garcia, Jose Luis Rasilla, Santiago Arribas, and E. Mediavilla "Bidimensional spectroscopy with optical fibers at the William Herschel and Nordic Optical Telescopes", Proc. SPIE 2198, Instrumentation in Astronomy VIII, (1 June 1994); https://doi.org/10.1117/12.176806

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