The Green Bank Telescope
The Green Bank Telescope
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DOI：
10.1117/12.390406
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发表时间：
1999-12
期刊：
影响因子：
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通讯作者：
Philip R. Jewell
中科院分区：
文献类型：
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作者：
Philip R. Jewell
100米长的NRAO绿色堤岸望远镜将于2000年初完成。GBT是有史以来最雄心勃勃的单射电望远镜，具有大量独特的设计和性能特征。本文将审查这些功能，其中包括偏置饲料（净孔径）设计，一个积极的表面，一个闭环激光测量系统的表面图形和指向控制，从大约100 MHz到115 GHz的宽频率覆盖范围，一个多功能的接收机选择机制，和一个新的多输入，256 k通道自相关光谱仪。将审查项目的状态、调试时间表、早期操作计划、初始仪器套件和未来仪器计划。在其大部分频率范围内，GBT将在灵敏度和图像保真度方面比现有望远镜有相当大的进步。将讨论GBT将产生重大影响的科学领域。
The 100-m NRAO Green Bank Telescope will be completed in early 2000. The GBT is the most ambitious, single radio telescope ever constructed and has a large number of unique design and performance features. This paper will review those features, which include an offset feed (clear aperture) design, an active surface, a closed-loop laser metrology system for surface figure and pointing control, broad frequency coverage from approximately 100 MHz to 115 GHz, a versatile receiver selection mechanism, and a new multi-input, 256k-channel autocorrelation spectrometer. The status of the project, the commissioning schedule, plans for early operations, the initial instrumentation suite, and plans for future instrumentation will be reviewed. Through most of its frequency range, the GBT will offer a considerable advance in sensitivity and image fidelity compared with exiting telescopes. Scientific areas for which the GBT will have a large impact will be discussed.