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High resolution spectrograph for the 4MOST facility

机译：4MOST设备的高分辨率光谱仪

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4MOST (4-metre Multi-Object Spectrograph Telescope) is a wide field and high multiplex fibre-fed spectroscopicfacility continuously running a public survey on one of ESO's 4-metre telescopes (NTT or VISTA). It is currentlyundergoing a concept study and comprises a multi-object (300) high resolution (20 000) spectrograph whose purpose isto provide detailed chemical information in two wavelength ranges (395-456.5 nm and 587-673 nm). It will complementthe data produced by ESA's space mission Gaia to form an unprecedented galactic-archaeology picture of the Milky Wayas the result of the public survey. Building on the developments carried out for the GYESsup1/sup instrument on the Canada-France-Hawaii Telescope in 2010, the spectrograph is intended as being athermal and not featuring any motorised partsfor high reliability and minimum maintenance, thereby allowing it to operate every night for five years. In addition to thefixed configuration which allows fine-tuning the spectrograph to a precise need, it features a dual-arm architecture withvolume-phase holographic gratings to achieve the required dispersion at a maximum efficiency in each channel. Bycombining high yield time-wise and photon-wise, the spectrograph is expected to deliver more than a million spectra andmake the most out of the selected 4-metre telescope.© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
机译：4MOST（4米多目标光谱仪望远镜）是一种广域，高倍数的光纤馈电光谱仪，可对ESO的4米望远镜之一（NTT或VISTA）持续进行公开调查。它目前正在进行概念研究，包括一个多对象（300）高分辨率（20 000）光谱仪，其目的是在两个波长范围（395-456.5 nm和587-673 nm）中提供详细的化学信息。它将对ESA太空任务盖亚（Gaia）产生的数据进行补充，以形成银河系史无前例的银河考古图景，这是公众调查的结果。该光谱仪基于2010年在加拿大-法国-夏威夷望远镜上对GYES 1 仪器进行的开发，旨在使该光谱仪处于非热态，并且不具有任何机动化部件，从而具有很高的可靠性和最低的维护要求，因此它每晚运行五年。除了可以将光谱仪微调到精确需求的固定配置外，它还具有双臂架构和体积相全息光栅，可在每个通道中以最大效率实现所需的色散。通过在时间方向和光子方向上组合高产量，该光谱仪有望提供超过一百万个光谱，并充分利用所选的4米望远镜。©（2012）COPYRIGHT光电仪器工程师协会（SPIE）。摘要的下载仅允许个人使用。

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