CUBES：甚大望远镜高分辨率紫外光谱仪最终设计评审后的光学设计与分析
CUBES: optical design and analysis of the VLT's high-resolution UV spectrograph past final design review
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中文总结 AI 辅助
介绍 CUBES 这一将装在甚大望远镜卡塞格伦焦点的紫外光谱仪，其在 300 - 405nm 有高仪器效率与分辨率。本文给出最终设计评审后的光学设计，含紫外优化校正器、图像切片器及光谱相机设计等。
中文摘要 AI 辅助
CUBES（卡塞格伦 U 波段高效光谱仪）将成为 8 - 10 米级望远镜上最有效的紫外光谱仪，利用欧洲南方天文台甚大望远镜在地面紫外波长下相对于欧洲南方天文台极大望远镜更高的望远镜效率。该仪器提供 300 - 405nm 的波长覆盖范围，具有高仪器效率（>37%）和分辨率>20,000（高分辨率）及>6,000（低分辨率）。它将安装在帕拉纳尔甚大望远镜的卡塞格伦焦点上。本文介绍了最终设计评审后的系统光学设计，详细的光学子系统包括：一对用于 65°天顶角的紫外优化大气色散校正器；用于重新格式化视场的高通量高分辨率和低分辨率图像切片器；以及色散补偿三镜光谱相机设计。
英文摘要
CUBES (Cassegrain U-Band Efficient Spectrograph) will be the most efficient UV spectrograph on an 8-10m class telescope, exploiting the ESO VLT's higher telescope efficiency relative to the ESO ELT in ground-based UV wavelengths. The instrument provides wavelength coverage over a range of 300-405nm, with high instrumental efficiency (>37%) and a resolving power of >20,000 (HR) and >6,000 (LR). It will be mounted on the Cassegrain focus of the VLT in Paranal. This paper presents the optical design of the system after the final design review. The optical subsystems detailed include: a pair of UV-optimized atmospheric dispersion correctors designed to function out to a zenith angle of 65°; high throughput HR and LR image slicers used to reformat the field-of-view; and a dispersion-compensating three-lens spectrographic camera design.
