Design of the calibration unit for the WEAVE multi-object spectrograph at the WHT

Date Issued
2016
Author(s)
Domínquez, Lilian
•
Cano, Diego
•
O'Mahony, Neil
•
Martín, Carlos
•
Picó, Sergio
•
Benn, Chris
•
Trager, Scott
•
Lhomé, Émilie
•
Ridings, Andy
•
Fariña, Cecilia
•
Abrams, D. C.
•
Balcells, Marc
•
Irwin, Mike
•
Lewis, Jim
•
Dalton, Gavin
•
Aguerri, J. A.
•
Bonifacio, P.
•
•
Carrasco, E.
DOI
Abstract
WEAVE is the next-generation spectroscopic facility for the William Herschel Telescope (WHT), offering multi-object (1000 fibres) and integral-field spectroscopy at two resolutions (R 5000, 20000) over a 2-deg field of view at prime focus. WEAVE will (mainly) provide optical follow up of ground-based (LOFAR) and space-based (GAIA) surveys. First light is expected in mid 2018. Here, we describe the calibration unit, which will be adapted from an existing unit for the AF2+WYFFOS spectrograph (WEAVE's precursor) at the WHT. We summarise the results from a thorough characterisation of current performance (e.g. intensity, stability and focal-plane coverage of illumination as a function of lamp type and wavelength). We then set out our plans for upgrading the unit and its control systems to meet the WEAVE science and operational requirements. We conclude from this assessment that the upgraded AF2+WYFFOS calibration unit will meet the requirements for WEAVE. The design of the WEAVE calibration unit is now complete.
Coverage
Ground-based and Airborne Instrumentation for Astronomy VI
All editors
Evans, Christopher J.; Simard, Luc; Takami, Hideki
Series
Volume
9908
Start page
99088R
Conferenece
Ground-based and Airborne Instrumentation for Astronomy VI
Conferenece place
Edinburgh, UK
Conferenece date
26 June - 1 July, 2016
Uri
Url
Issn Identifier
0277-786X
Ads BibCode
2016SPIE.9908E..8RD
Rights
open.access
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