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首页> 外文期刊>Publications of the Astronomical Society of the Pacific >SpeX: A Medium-Resolution 0.8-5.5 Micron Spectrograph and Imager for the NASA Infrared Telescope Facility
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SpeX: A Medium-Resolution 0.8-5.5 Micron Spectrograph and Imager for the NASA Infrared Telescope Facility

机译：SpeX：用于NASA红外望远镜设施的中分辨率0.8-5.5微米光谱仪和成像仪

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摘要

We present the design, construction, and performance of SpeX, a medium-resolution 0.8-5.5 μm cryogenic spectrograph and imager, now in operation at the 3.0 m NASA Infrared Telescope Facility (IRTF) on Mauna Kea. The design uses prism cross-dispersers and gratings to provide resolving powers up to R ～ 2000 simultaneously across 0.8-2.4, 1.9-4.2, or 2.4-5.5 μm, with a 15" long slit. A high-throughput low-resolution R ～ 200 prism mode is also provided for faint-object and occultation spectroscopy. Single-order 60" long-slit modes with resolving powers up to R ～ 2000 are available for extended objects. The spectrograph employs an Aladdin 3 1024 * 1024 InSb array and uses narrow slits and a spatial scale of 0".15 pixel~(-1) for optimum sensitivity on point sources. An autonomous infrared slit viewer is used for object acquisition, infrared guiding, and scientific imaging in the wavelength range 0.8-5.5 μm. The imager employs an Aladdin 2 512 * 512 InSb array that covers a 60" * 60" field of view at 0".12 pixel~(-1). SpeX was successfully commissioned on IRTF during 2000 May, June, and July. Astronomical observations are presented to illustrate performance.
机译：我们介绍SpeX的设计，构造和性能，SpeX是中分辨率的0.8-5.5μm低温光谱仪和成像仪，目前正在冒纳凯阿河上的3.0 m NASA红外望远镜设施（IRTF）上运行。该设计使用棱镜交叉扩散器和光栅，同时在0.8-2.4、1.9-4.2或2.4-5.5μm范围内提供15英寸长的缝隙，同时提供高达R〜2000的分辨能力。高通量低分辨率R〜还提供200棱镜模式用于微弱物体和掩星光谱。分辨能力高达R〜2000的单阶60英寸长缝模式可用于扩展物体。该光谱仪采用Aladdin 3 1024 * 1024 InSb阵列，并使用狭窄的狭缝和0“ .15 pixel〜（-1）的空间比例，以在点光源上获得最佳灵敏度。自动红外狭缝查看器用于物体获取，红外引导，并在0.8-5.5μm的波长范围内进行科学成像。该成像器采用Aladdin 2 512 * 512 InSb阵列，在0“ .12像素〜（-1）时覆盖60” * 60“的视场。 SpeX已于2000年5月，6月和7月在IRTF上成功启用。提出了天文观测以说明性能。

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