斯巴鲁望远镜的光纤多目标摄谱仪（FMOS）
The Fibre Multi-Object Spectrograph (FMOS) for Subaru Telescope
摘要：
光纤多目标光谱仪（FMOS）是第一台具有宽视场的近红外仪器，能够同时采集多达400个物体的光谱。它已被开发为斯巴鲁望远镜F/2主焦点的常用仪器。采用在近红外（0.9- 1.8 μ m）波长范围内优化的新型3元件校正器，实现了30“直径的视场覆盖。由于空间有限的主焦点，我们不得不开发一种新的纤维定位器称为“Echidna”连同两个OH-气辉抑制摄谱仪。FMOS由三个子系统组成：IR主聚焦单元、光纤定位系统/连接器单元和两台摄谱仪。经过全面的系统集成，FMOS于2007年底安装在望远镜上。通过各种测试和工程观察检查了性能的许多方面。在本文中，我们介绍了FMOS的光学和机械部件，并显示了我们的天空工程观测的结果。
英文摘要：
Fibre Multi-Object Spectrograph (FMOS) is the first near-infrared instrument with a wide field of view capable of acquiring spectra simultaneously from up to 400 objects. It has been developed as a common-use instrument for the F/2 prime-focus of the Subaru Telescope. The field coverage of 30' diameter is achieved using a new 3-element corrector optimized in the near-infrared (0.9-1.8um) wavelength range. Due to limited space at the prime-focus, we have had to develop a novel fibre positioner called "Echidna" together with two OH-airglow suppressed spectrographs. FMOS consists of three subsystems: the prime focus unit for IR, the fibre positioning system/connector units, and the two spectrographs. After full systems integration, FMOS was installed on the telescope in late 2007. Many aspects of performance were checked through various test and engineering observations. In this paper, we present the optical and mechanical components of FMOS and show the results of our on-sky engineering observations to date.
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