High Dispersion Spectrograph (HDS) for the Subaru Telescope
High Dispersion Spectrograph (HDS) for the Subaru Telescope
复制标题
DOI：
10.1093/pasj/54.6.855
复制
发表时间：
2002-12
影响因子：
2.3
通讯作者：
K. Noguchi;W. Aoki;S. Kawanomoto;H. Ando;S. Honda;H. Izumiura;E. Kambe;K. Okita;K. Sadakane;B. Sato;A. Tajitsu;M. Takada-Hidai;W. Tanaka;E. Watanabe;Michitoshi Yoshida
中科院分区：
文献类型：
--
作者：
K. Noguchi;W. Aoki;S. Kawanomoto;H. Ando;S. Honda;H. Izumiura;E. Kambe;K. Okita;K. Sadakane;B. Sato;A. Tajitsu;M. Takada-Hidai;W. Tanaka;E. Watanabe;Michitoshi Yoshida
介绍了斯巴鲁望远镜高色散摄谱仪的设计和性能。HDS是一台位于望远镜内史密斯焦点的阶梯光栅摄谱仪。准直光束尺寸为272 mm，中阶梯光栅的总尺寸为300 mm × 840 mm（）。HDS有两个交叉色散光栅，分别针对蓝色和红色波长区域进行了优化。相机是折反射式系统，由三个校正透镜和一个反射镜组成。探测器采用两个像素为13.5的EEV-CCD。具有${0\rlap {.}的标准配置{}^{\mathrm {\prime \prime }}4}$狭缝的光谱分辨率为，狭缝宽度越窄，分辨率越高，可达。光谱仪的灵敏度从3000到1，一次曝光覆盖1500-2500的范围，这取决于波长区域。望远镜和摄谱仪的通量，包括探测器的效率，在5000- 6000时约为13%，在4000时约为8%。文中还报道了摄谱仪的稳定性和散射光级。
We present the design and performance of the High Dispersion Spectrograph (HDS) of the Subaru Telescope. HDS is an echelle spectrograph located at the Nasmyth focus of the telescope. The collimated beam size is 272 mm, and the echelle is 300 mm by 840 mm in total size (). HDS has two cross-dispersing gratings withand, which are optimized for the blue and red wavelength regions, respectively. The camera is of the catadioptric type system, consisting of three corrector lenses and a mirror. Two EEV-CCD’s withpixels and a pixel size of 13.5are used as the detector. A standard configuration with a ${0\rlap {.}{}^{\mathrm {\prime \prime }}4}$ slit gives a spectral resolution of, and a narrower slit width enables higher resolution of up to. The spectrograph has sensitivities from 3000to 1, and one exposure covers a range of 1500–2500, depending on the wavelength region. The throughput of the telescope and the spectrograph, including the efficiency of the detector, is about 13% in 5000–6000and about 8% at 4000. The stability of the spectrograph and scattered light level are also reported.