标题： 三十米望远镜的红外成像光谱仪（IRIS）：大气色散校正器 显示英文标题

标题： The Infrared Imaging Spectrograph (IRIS) for TMT: the atmospheric dispersion corrector

摘要： 我们提出了用于TMT（三十米望远镜）红外成像光谱仪（IRIS）的大气色散校正器（ADC）的概念设计。审查了该ADC的严苛要求以及由不可纠正的大气效应引起的观测限制。某些玻璃组合可以满足小于1毫角秒的残余色散要求。讨论了设计决策，并描述了概念设计ADC的性能。还介绍了替代方案及其性能权衡。 显示英文摘要

摘要： We present a conceptual design for the atmospheric dispersion corrector (ADC) for TMT's Infrared Imaging Spectrograph (IRIS). The severe requirements of this ADC are reviewed, as are limitations to observing caused by uncorrectable atmospheric effects. The requirement of residual dispersion less than 1 milliarcsecond can be met with certain glass combinations. The design decisions are discussed and the performance of the design ADC is described. Alternative options and their performance tradeoffs are also presented.