First results of tests on the WEAVE fibres

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

doi:10.1117/12.2231170

22 July 2016 First results of tests on the WEAVE fibres

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

Author Affiliations +

Proceedings Volume 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II; 991220 (2016) https://doi.org/10.1117/12.2231170
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

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.

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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, and Antonella Vallenari "First results of tests on the WEAVE fibres", Proc. SPIE 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II, 991220 (22 July 2016); https://doi.org/10.1117/12.2231170

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