The Keck-I Cassegrain ADC
The Keck-I Cassegrain ADC
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Keck-I 卡塞格伦 ADC
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
V. Wallace
中科院分区：
文献类型：
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作者：
A. Phillips;Joseph S. Miller;D. Cowley;V. Wallace
我们简要介绍了最近投入使用的凯克-I卡塞格伦焦点大气色散校正器(ADC)的设计、建造和性能。这是一个直径略高于1米的熔融石英棱镜的“纵向”ADC，设计用于在最大60度的天顶距离和20弧分的视场范围内工作，对图像质量和吞吐量的影响可以忽略不计。它提供0.31到1.1微米的色散补偿。基于Sol-Gel的减反射涂层是一个主要的技术挑战，我们遇到了一些以前没有意识到的LADC设计的性能后果，在采用这种设计之前应该考虑到这一点。
We briefly describe the design, construction and performance of the recently-commissioned Atmospheric Dispersion Corrector (ADC) for the Keck-I Cassegrain focus. This is a "longitudinal" ADC with fused silica prisms slightly over 1- meter in diameter, designed to operate at zenith distances up to 60 degrees and over a 20 arcminute field-of-view with negligible impact on image quality and throughput. It provides dispersion compensation from 0.31 to 1.1 microns. The sol-gel-based antireflection coatings were a major technological challenge, and we encountered some previously unrecognized performance consequences of the LADC design which should be considered before adopting this design.