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arXiv 1408.2867astro-ph.IM
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斯巴鲁望远镜主焦点摄谱仪F/#转换微透镜的设计与性能

Design and performance of a F/#-conversion microlens for Prime Focus Spectrograph at Subaru Telescope

Naruhisa Takato, Yoko Tanaka, James E. Gunn, Naoyuki Tamura, Atsushi Shimono, Hajime Sugai, Hiroshi Karoji, Akitoshi Ueda, Kouichi Waseda, Masahiko Kimura, Youichi Ohyama

摘要:

PFS是一个多目标摄谱仪,由斯巴鲁望远镜主焦点处的2394根光纤馈电。由于主焦点处的F/#对于摄谱仪来说太快了,我们设计了一个小的凹平负透镜连接到每根光纤的尖端,将望远镜光束(F/2.2)转换为F/2.8。我们对镜头进行了优化,以最大限度地提高F/2.8范围内的光线数量,同时保持1.28的放大率。微透镜通过玻璃成型制造,并且将在前表面施加超宽带AR涂层(λ =0.38-1.26 μ m时<1.5%)。

英文摘要:

The PFS is a multi-object spectrograph fed by 2394 fibers at the prime focus of Subaru telescope. Since the F/# at the prime focus is too fast for the spectrograph, we designed a small concave-plano negative lens to be attached to the tip of each fiber that converts the telescope beam (F/2.2) to F/2.8. We optimized the lens to maximize the number of rays that can be confined inside F/2.8 while maintaining a 1.28 magnification. The microlenses are manufactured by glass molding, and an ultra-broadband AR coating (<1.5% for lambda=0.38-1.26 um) will be applied to the front surface.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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