Integration and early testing of WEAVE: the next-generation spectroscopy facility for the William Herschel Telescope
Integration and early testing of WEAVE: the next-generation spectroscopy facility for the William Herschel Telescope
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WEAVE 的集成和早期测试：威廉·赫歇尔望远镜的下一代光谱设施
DOI：
10.1117/12.2561067
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Dalton G
中科院分区：
文献类型：
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作者：
Dalton G
我们介绍了威廉·赫歇尔望远镜(WHT)的Weave下一代光谱设备的整体集成进展情况，该设备目前计划于2021年初第一次亮相，几乎所有部件现在都已到达天文台。我们还总结了五年初始阶段调查行动背后的当前规划，以及已经实施的一些详细的端到端科学模拟，以评估数据处理后的最终地面性能。Weave将提供地面(LOFAR)和空间(GAIA)调查的光学陆基跟踪。Weave是一种多目标和多IFU设施，利用WHT新的2度主焦点视场，带有缓冲拾取和放置定位器系统，可容纳1000根多目标(MOS)光纤、20个小型整体场单元，或用于每次观测的单个大型IFU。光纤被馈送到位于望远镜Nasmyth平台上的WHT GHRIL外壳内的单(双光束)光谱仪，总光谱像素为16k，支持在一次曝光中在370-1000 nm的全波长范围内进行R~5000的观测，或在R~20000的每臂有限覆盖的高分辨率模式下进行观测。
We present an update on the overall integration progress of the WEAVE next-generation spectroscopy facility for the William Herschel Telescope (WHT), now scheduled for first light in early-2021, with almost all components now arrived at the observatory. We also present a summary of the current planning behind the 5-year initial phase of survey operations, and some detailed end-to-end science simulations that have been implemented to evaluate the final on-sky performance after data processing. WEAVE will provide optical ground-based follow up of ground-based (LOFAR) and space-based (Gaia) surveys. WEAVE is a multi-object and multi-IFU facility utilizing a new 2-degree prime focus field of view at the WHT, with a buffered pick-and-place positioner system hosting 1000 multi-object (MOS) fibres, 20 mini integral field units, or a single large IFU for each observation. The fibres are fed to a single (dual-beam) spectrograph, with total of 16k spectral pixels, located within the WHT GHRIL enclosure on the telescope Nasmyth platform, supporting observations at R~5000 over the full 370-1000nm wavelength range in a single exposure, or a high resolution mode with limited coverage in each arm at R~20000.