Design of the calibration unit for the WEAVE multi-object spectrograph at the WHT
Design of the calibration unit for the WEAVE multi-object spectrograph at the WHT
复制标题
WHT WEAVE 多目标光谱仪校准装置的设计
DOI：
10.1117/12.2233007
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发表时间：
2016
影响因子：
3.3
通讯作者：
E. Carrasco
中科院分区：
文献类型：
--
作者：
Lilian Domínquez;D. Cano;N. O'Mahony;Carlos Martín;S. Picó;C. Benn;S. Trager;É. Lhomé;Andy Ridings;C. Fariña;D. Abrams;M. Balcells;M. Irwin;J. Lewis;G. Dalton;J. Aguerri;P. Bonifacio;A. Vallenari;E. Carrasco
WEAVE是威廉·赫歇尔望远镜（WHT）的下一代光谱设备，在主焦点的2度视场内提供两种分辨率（R ~ 5000，20000）的多目标（1000光纤）和积分场光谱。WEAVE将（主要）提供地基（LOFAR）和天基（GAIA）调查的光学跟踪。预计2018年年中将首次亮相。在这里，我们描述的校准单元，这将是适应于现有的单位为AF 2 +WYFFOS摄谱仪（WEAVE的前身）在西隧。我们总结的结果，从一个彻底的表征当前的性能（例如，强度，稳定性和焦平面覆盖的照明作为灯的类型和波长的函数）。然后，我们制定了升级机组及其控制系统的计划，以满足WEAVE的科学和操作要求。我们从该评估中得出结论，升级后的AF 2 +WYFFOS校准装置将满足WEAVE的要求。WEAVE校准单元的设计现已完成。
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.