X-shooter: UV-to-IR intermediate-resolution high-efficiency spectrograph for the ESO VLT
X-shooter: UV-to-IR intermediate-resolution high-efficiency spectrograph for the ESO VLT
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X-shooter：适用于 ESO VLT 的紫外到红外中间分辨率高效光谱仪
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
F. Zerbi
中科院分区：
文献类型：
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作者：
S. D’odorico;M. Andersen;P. Conconi;V. de Caprio;B. Delabre;P. Di Marcantonio;H. Dekker;M. Downing;G. Finger;P. Groot;H. Hanenburg;F. Hammer;D. Horville;J. Hjorth;L. Kaper;J. Klougart;P. Kjaergaard;J. Lizon;M. Marteaud;R. Mazzoleni;N. Michaelsen;R. Pallavicini;F. Rigal;P. Santin;Anton Norup Soerensen;P. Spano;L. Venema;P. Vola;F. Zerbi
X-shooter是一款单目标摄谱仪，用于其中一个VLT UT的卡塞格伦焦点。它在一次曝光中覆盖了从UV到H波段的光谱范围，并可能扩展到K波段的一部分。它的设计是通过优化光学、涂层、色散元件和探测器的三个分支来最大限度地提高该光谱范围内的灵敏度。它以中等分辨率（R=4000-14000，取决于波长和狭缝宽度）工作，足以定量地解决大量的天体物理学应用，同时在没有强大气发射和吸收线的光谱区域的背景有限S/N制度中工作。少量的移动功能（因此仪器模式）和固定的光谱格式使其易于操作并允许快速响应。微型IFU单元（1.8”x 4”）可以插入望远镜焦平面，并在0.6“x 12”的狭缝中重新格式化。该仪器包括紫外和视觉臂中的大气色散校正器。该项目预计将开发一个全自动数据简化程序包。该仪器的名字是由它的能力，观察在一个单一的拍摄未知的通量分布和红移的来源。该仪器由来自丹麦、法国、意大利和荷兰的研究所联合体与欧洲南方天文台合作建造。当它运行时，它的观测能力将在非常大的望远镜中独一无二。
X-shooter is a single target spectrograph for the Cassegrain focus of one of the VLT UTs. It covers in a single exposure the spectral range from the UV to the H band with a possible extension into part of the K band. It is designed to maximize the sensitivity in this spectral range through the splitting in three arms with optimized optics, coatings, dispersive elements and detectors. It operates at intermediate resolutions (R=4000-14000, depending on wavelength and slit width) sufficient to address quantitatively a vast number of astrophysical applications while working in a background-limited S/N regime in the regions of the spectrum free from strong atmospheric emission and absorption lines. The small number of moving functions (and therefore instrument modes) and fixed spectral format make it easy to operate and permit a fast response. A mini-IFU unit (1.8" x 4") can be inserted in the telescope focal plane and is reformatted in a slit of 0.6"x 12" .The instrument includes atmospheric dispersion correctors in the UV and visual arms. The project foresees the development of a fully automatic data reduction package. The name of the instrument has been inspired by its capability to observe in a single shot a source of unknown flux distribution and redshift. The instrument is being built by a Consortium of Institutes from Denmark, France, Italy and the Netherlands in collaboration with ESO. When it operation, its observing capability will be unique at very large telescopes.