论文标题
詹姆斯·韦伯太空望远镜上的近红外光谱仪（NIRSPEC）I。
The Near-Infrared Spectrograph (NIRSpec) on the James Webb Space Telescope I. Overview of the instrument and its capabilities
论文作者
论文摘要
我们概述了James Webb Space望远镜上近红外光谱仪（NIRSPEC）的设计和功能。 NIRSPEC旨在在波长范围内进行低分辨率（$ r \！= 30 \！ - 330 $）Prism光谱$ 0.6-5.3 \！〜μ $ m和更高的分辨率（$ r \！= 500 \！= 500 \！ - 1340 $或$ r \！= 1320 $ \！= 1320 \！ - 3600 $！ $ 0.7-5.2 \！〜μ $ m，既采用五个固定缝隙中的任何一种，或者使用五个固定缝隙中的任何一个，或者是3.1 $ \ times $ 3.2 arcsec $^2 $ Integral Field单元，或在多对象模式下采用新型可编程的微型零件设备，涵盖3.6 $ 3.6 $ 3.6 $ 3.6 $ 3.4〜 $ 3.4〜Arcmin $^2 $^2 $^2 $^2 $^2 $^2 $^2 $^2。描述了NIRSPEC的全反射光学链及其不同组件的性能，并涉及设计仪器时进行的一些权衡。还讨论了NIRSPEC的微弱分光光度敏感性，以及其对能量粒子环境的依赖性，即其两个检测器阵列可能会在轨道上进行。
We provide an overview of the design and capabilities of the near-infrared spectrograph (NIRSpec) onboard the James Webb Space Telescope. NIRSpec is designed to be capable of carrying out low-resolution ($R\!=30\!-330$) prism spectroscopy over the wavelength range $0.6-5.3\!~μ$m and higher resolution ($R\!=500\!-1340$ or $R\!=1320\!-3600$) grating spectroscopy over $0.7-5.2\!~μ$m, both in single-object mode employing any one of five fixed slits, or a 3.1$\times$3.2 arcsec$^2$ integral field unit, or in multiobject mode employing a novel programmable micro-shutter device covering a 3.6$\times$3.4~arcmin$^2$ field of view. The all-reflective optical chain of NIRSpec and the performance of its different components are described, and some of the trade-offs made in designing the instrument are touched upon. The faint-end spectrophotometric sensitivity expected of NIRSpec, as well as its dependency on the energetic particle environment that its two detector arrays are likely to be subjected to in orbit are also discussed.
