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Proceedings Paper

First results of tests on the WEAVE fibres
Author(s): Frédéric Sayède; Youssef Younes; Gilles Fasola; Stéphane Dorent; Don Carlos Abrams; J. Alphonso L. Aguerri; Piercarlo Bonifacio; Esperanza Carrasco; Gavin Dalton; Kevin Dee; Philippe Laporte; Ian Lewis; Emilie Lhome; Kevin Middleton; Johan H. Pragt; Juerg Rey; Remko Stuik; Scott C. Trager; Antonella Vallenari
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Paper Abstract

WEAVE is a new wide-field spectroscopy facility proposed for the prime focus of the 4.2m William Herschel Telescope. The facility comprises a new 2-degree field of view prime focus corrector with a 1000-multiplex fibre positioner, a small number of individually deployable integral field units, and a large single integral field unit. The IFUs (Integral Field Units) and the MOS (Multi Object Spectrograph) fibres can be used to feed a dual-beam spectrograph that will provide full coverage of the majority of the visible spectrum in a single exposure at a spectral resolution of ~5000 or modest wavelength coverage in both arms at a resolution ~20000. The instrument is expected to be on-sky by the first quarter of 2018 to provide spectroscopic sampling of the fainter end of the Gaia astrometric catalogue, chemical labeling of stars to V~17, and dedicated follow up of substantial numbers of sources from the medium deep LOFAR surveys. After a brief description of the Fibre System, we describe the fibre test bench, its calibration, and some test results. We have to verify 1920 fibres from the MOS bundles and 740 fibres from the mini-IFU bundles with the test bench. In particular, we present the Focal Ratio Degradation of a cable.

Paper Details

Date Published: 22 July 2016
PDF: 13 pages
Proc. SPIE 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II, 991220 (22 July 2016); doi: 10.1117/12.2231170
Show Author Affiliations
Frédéric Sayède, GEPI, Observatoire de Paris, PSL Research Univ., CNRS, Univ. Paris Diderot (France)
Youssef Younes, GEPI, Observatoire de Paris, PSL Research Univ., CNRS, Univ. Paris Diderot (France)
Gilles Fasola, GEPI, Observatoire de Paris, PSL Research Univ., CNRS, Univ. Paris Diderot (France)
Stéphane Dorent, GEPI, Observatoire de Paris, PSL Research Univ., CNRS, Univ. Paris Diderot (France)
Don Carlos Abrams, Isaac Newton Group of Telescopes (Spain)
J. Alphonso L. Aguerri, Instituto de Astrofísica de Canarias (Spain)
Piercarlo Bonifacio, GEPI, Observatoire de Paris, PSL Research Univ., CNRS, Univ. Paris Diderot (France)
Esperanza Carrasco, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)
Gavin Dalton, STFC Rutherford Appleton Lab. (United Kingdom)
Univ. of Oxford (United Kingdom)
Kevin Dee, Instituto de Astrofísica de Canarias (Spain)
Philippe Laporte, GEPI, Observatoire de Paris, PSL Research Univ., CNRS, Univ. Paris Diderot (France)
Ian Lewis, Univ. of Oxford (United Kingdom)
Emilie Lhome, Isaac Newton Group of Telescopes (Spain)
Kevin Middleton, STFC Rutherford Appleton Lab. (United Kingdom)
Johan H. Pragt, NOVA Optical Infrared Instrumentation Group (Netherlands)
Juerg Rey, Isaac Newton Group of Telescopes (Spain)
Remko Stuik, NOVA Optical Infrared Instrumentation Group (Netherlands)
Scott C. Trager, Univ. of Groningen (Netherlands)
Antonella Vallenari, INAF - Osservatorio Astronomico di Padova (Italy)


Published in SPIE Proceedings Vol. 9912:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II
Ramón Navarro; James H. Burge, Editor(s)

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