一种用于HROS-TMT的新型宽带大气色散校正器
A new broadband atmospheric dispersion corrector for HROS-TMT
AI总结：
本文针对TMT上HROS多目标模式的宽带大气色散问题，提出采用旋转式大气色散校正器（RADC）结合优化阿米西棱镜进行全波段校正，并首次在Zemax中通过自定义DLL实现Filippenko（1982）模型以提升蓝光区域精度。
摘要：
大气色散导致来自天体的不同波长的光在穿过地球大气层时以不同角度折射。这一效应在望远镜焦平面上产生拉长的像，并降低进入光谱仪的光纤耦合效率。我们提出一种光学设计，结合旋转式大气色散校正器（RADC），以解决三十米望远镜（TMT）上高分辨率光学光谱仪（HROS）多目标模式中遇到的宽带色散问题。RADC使用阿米西棱镜在整个波长范围（0.31-1微米）内校正色散，该棱镜经过优化，具有超过90%的透射效率，并在色散校正后使光束相对于光轴的角偏差最小。为了提高精度，特别是在蓝光区域，我们首次通过自定义动态链接库（DLL）文件在Zemax中实现了Filippenko（1982）模型。
英文摘要：
Atmospheric dispersion causes light from celestial objects with different wavelengths to refract at varying angles as it passes through Earth's atmosphere. This effect results in an elongated image at the focal plane of a telescope and diminishes fiber coupling efficiency into spectrographs. We propose an optical design that incorporates a Rotational Atmospheric Dispersion Corrector (RADC) to address the broadband dispersion encountered in the multi-object mode of the High-Resolution Optical Spectrograph (HROS) on the Thirty Meter Telescope (TMT). The RADC corrects the dispersion across the entire wavelength range (0.31-1 micron), using Amici prisms optimized for over 90% transmission efficiency and minimal angular deviation of the beam from the optical axis after dispersion correction. For enhanced accuracy, particularly in the blue region, we have, for the first time, implemented the Filippenko (1982) model in Zemax via a custom Dynamic-Link Library (DLL) file.
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