NIRSpec微快门阵列：JWST科学运行两年后的可操作性与运行情况
The NIRSpec Micro-Shutter Array: Operability and Operations After Two Years of JWST Science
AI总结：
本文介绍了JWST近红外光谱仪微快门阵列在科学运行两年后的健康状态、可操作性及运行进展，指出尽管面临电短路等工程挑战，该多目标光谱系统仍保持稳健运行且能力无显著退化。
摘要：
詹姆斯·韦伯空间望远镜上的近红外光谱仪（NIRSpec）通过使用可编程的微机电快门阵列，为天文界提供了前所未有的天基多目标光谱（MOS）观测能力。NIRSpec于2021年12月发射，并在2022年上半年与天文台的其他一系列仪器共同完成调试，自调试完成以来一直开展科学观测。如果没有严格的工程操作计划来主动监测和维护NIRSpec的硬件健康与安全，并提升仪器效率和性能，这些观测是不可能实现的。尽管MOS只是用户可用的观测模式之一，但实现该功能的微快门组件（MSA）的复杂性和独特性带来了各种工程挑战，包括在曝光中产生污染性辉光的电短路现象。尽管存在这些挑战，NIRSpec多目标光谱仪依然稳健运行，其能力没有出现明显的退化或显著下降。本文概述了NIRSpec微快门子系统的健康状态和可操作性，并介绍了自仪器调试完成以来其运行中出现的一些进展。
英文摘要：
The Near Infrared Spectrograph (NIRSpec) on the James Webb Space Telescope affords the astronomical community an unprecedented space-based Multi-Object Spectroscopy (MOS) capability through the use of a programmable array of micro-electro-mechanical shutters. Launched in December 2021 and commissioned along with a suite of other observatory instruments throughout the first half of 2022, NIRSpec has been carrying out scientific observations since the completion of commissioning. These observations would not be possible without a rigorous program of engineering operations to actively monitor and maintain NIRSpec's hardware health and safety and enhance instrument efficiency and performance. Although MOS is only one of the observing modes available to users, the complexity and uniqueness of the Micro-Shutter Assembly (MSA) that enables it has presented a variety of engineering challenges, including the appearance of electrical shorts that produce contaminating glow in exposures. Despite these challenges, the NIRSpec Multi-Object Spectrograph continues to perform robustly with no discernible degradation or significant reduction in capability. This paper provides an overview of the NIRSpec micro-shutter subsystem's state of health and operability and presents some of the developments that have taken place in its operation since the completion of instrument commissioning.
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