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A multipurpose fiber-fed VPHG spectrograph for LAMOST
Yongtian Zhu; Zhongwen Hu; Qingfeng Zhang; Lei Wang; Jianing Wang
2008-06-28
会议录名称Ground-based and Airborne Instrumentation for Astronomy
卷号6269
期号6269
页码Vol.6269 0M-1-9
会议日期2006-5-24
会议地点Orlando, FL
会议主办者The International Society for Optical Engineering
出版者SPIE
摘要
A multipurpose fiber-fed double-beam Schmidt spectrograph using VPHG (volume phase holographic gratings) is under construction for LAMOST (The Large Sky Area Multi-Object Fiber Spectroscopic Telescope). There are 16 such spectrographs (hereafter referred to as LRSs) for the project. The spectrographs are designed with wavelength coverage from 370 to 900 nm, with spectral resolutions of 1000-10000, and with multi-object capability over a 5 degrees field of view. Each spectrograph will be accommodating 250 fibers of 320 microns diameter (corresponding 3.3 arcsecs). The
200 mm diameter collimated beam is split into two separate channels. The blue channel is optimized for 370nm-590nm, and the red channel for 570nm-900nm. The LRS can work in several varied resolution modes. The optical design and performance is described. The spectrograph is of simple design with moderate image quality and good throughput. Progress on the construction of LRS is reported as well.
关键词Instrumentation Spectrograph Volume Phase Holographic Gratings
学科领域郭守敬望远镜(lamost) ; 天文光谱仪
文献类型会议论文
条目标识符http://ir.niaot.ac.cn/handle/114a32/434
专题会议论文
推荐引用方式
GB/T 7714
Yongtian Zhu,Zhongwen Hu,Qingfeng Zhang,et al. A multipurpose fiber-fed VPHG spectrograph for LAMOST[C]:SPIE,2008:Vol.6269 0M-1-9.
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