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A multipurpose fiber-fed VPHG spectrograph for LAMOST
Yongtian Zhu; Zhongwen Hu; Qingfeng Zhang; Lei Wang; Jianing Wang
Source PublicationGround-based and Airborne Instrumentation for Astronomy
PagesVol.6269 0M-1-9
Conference Date2006-5-24
Conference PlaceOrlando, FL
Funding OrganizationThe International Society for Optical Engineering
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.
KeywordInstrumentation Spectrograph Volume Phase Holographic Gratings
Subject Area郭守敬望远镜(lamost) ; 天文光谱仪
Document Type会议论文
Recommended Citation
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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