James Webb Space Telescope: large deployable cryogenic telescope in space
James Webb Space Telescope: large deployable cryogenic telescope in space
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DOI：
10.1117/1.oe.51.1.011003
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发表时间：
2012-01-01
影响因子：
1.3
通讯作者：
Feinberg, Lee D.
中科院分区：
文献类型：
--
作者：
Lightsey, Paul A.;Atkinson, Charles;Feinberg, Lee D.
詹姆斯·韦伯太空望远镜（英语：James Webb Space Telescope，缩写：JWST）是一个红外太空望远镜，旨在探索四个主要的科学主题：第一次光和再电离，星系的组装，恒星和原行星系统的诞生，以及行星系统和生命的起源。JWST是一种分段式结构望远镜，孔径为6.6米。它将在围绕地球-太阳第二拉格朗日点（L2）的轨道上通过被动冷却实现低温（40 K）运行。被动冷却是通过一个大的遮阳板，提供热隔离和保护，从太阳直接照射的手段。望远镜和航天器系统的大尺寸要求它们以适合阿丽亚娜5号整流罩的配置存放发射，然后在发射后展开。常规波前传感和控制测量用于实现分段主镜的定相和望远镜的初始对准。一套仪器将提供在0.6至27 μ m波长的光谱范围内进行观测的能力，并具有成像和光谱配置。概述了JWST的体系结构和选定的光学设计功能进行了说明。(C)2012年，美国光电仪器工程师学会（SPIE）。[DOI：10.1117/1.OE.51.1.011003]
The James Webb Space Telescope (JWST) is an infrared space telescope designed to explore four major science themes: first light and reionization, the assembly of galaxies, the birth of stars and protoplanetary systems, and planetary systems and origins of life. JWST is a segmented architecture telescope with an aperture of 6.6 m. It will operate at cryogenic temperature (40 K), achieved via passive cooling, in an orbit about the Earth-Sun second Lagrange point (L2). Passive cooling is facilitated by means of a large sunshield that provides thermal isolation and protection from direct illumination from the Sun. The large size of the telescope and spacecraft systems require that they are stowed for launch in a configuration that fits the Ariane 5 fairing, and then deployed after launch. Routine wavefront sensing and control measurements are used to achieve phasing of the segmented primary mirror and initial alignment of the telescope. A suite of instruments will provide the capability to observe over a spectral range from 0.6- to 27-mu m wavelengths with imaging and spectroscopic configurations. An overview is presented of the architecture and selected optical design features of JWST are described. (C) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.OE.51.1.011003]