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Proceedings Paper

Multi-object fibre spectroscopy at the WHT: performance enhancements of AF2+WYFFOS
Author(s): Lilian Domínquez Palmero; Diego Cano; Cecilia Fariña; Richard Bassom; Emilie Lhomé; Neil O'Mahony; Jure Skvarc; Andy Ridings; Chris R. Benn; Don Carlos Abrams; Marc Balcells
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Paper Abstract

AF2+WYFFOS is the multi-object one degree field-of-view fibre-fed spectrograph at the prime focus of the 4.2 m William Herschel Telescope (WHT) at the Observatorio del Roque de Los Muchachos (ORM). Demand for this has been decreasing over the years due to its low overall throughput. Given the strategic importance of multi-fibre spectroscopy for the WHT’s future, with the coming of WEAVE (the powerful next-generation multi-object spectrograph for the WHT to be commissioned in 2017), during 2013 and 2014 ING staff carried out an end-to-end analysis of the reasons for low throughput. The investigations addressed target-acquisition/positioning/guiding, focal-plane geometry, optical transmission and overall system throughput measurements. AF2+WYFFOS performance has improved significantly as a result of these enhancements, and it is ready now to perform as a useful precursor and science test-bed for surveys with WEAVE, the new wide-field multi-object spectroscopy facility at the WHT.

Paper Details

Date Published: 18 July 2014
PDF: 13 pages
Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 914778 (18 July 2014); doi: 10.1117/12.2066653
Show Author Affiliations
Lilian Domínquez Palmero, Isaac Newton Group of Telescopes (Spain)
Diego Cano, Isaac Newton Group of Telescopes (Spain)
Cecilia Fariña, Isaac Newton Group of Telescopes (Spain)
Richard Bassom, Isaac Newton Group of Telescopes (Spain)
Emilie Lhomé, Isaac Newton Group of Telescopes (Spain)
Neil O'Mahony, Isaac Newton Group of Telescopes (Spain)
Jure Skvarc, Isaac Newton Group of Telescopes (Spain)
Andy Ridings, Isaac Newton Group of Telescopes (Spain)
Chris R. Benn, Isaac Newton Group of Telescopes (Spain)
Don Carlos Abrams, Isaac Newton Group of Telescopes (Spain)
Marc Balcells, Isaac Newton Group of Telescopes (Spain)


Published in SPIE Proceedings Vol. 9147:
Ground-based and Airborne Instrumentation for Astronomy V
Suzanne K. Ramsay; Ian S. McLean; Hideki Takami, Editor(s)

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