| Performance and sensitivity of Low Resolution Spectrographs for LAMOST | |
Yonghui Hou ; Yongtian Zhu; Zhongwen Hu; Lei Wang; Jianing Wang
| |
| 2010-07-14 | |
| Source Publication | Ground-based and Airborne Instrumentation for Astronomy III |
| Volume | 7735 |
| Issue | 7735 |
| Pages | Vol.7735 0C-1-9 |
| Conference Date | 2010-6-27 |
| Conference Place | San Diego, California, USA |
| Funding Organization | The International Society for Optical Engineering |
| Publisher | SPIE |
| Abstract |
The 16 low resolution spectrographs (LRS) have been successfully commissioned for the LAMOST. The LRS design employs a dual-beamed and bench-mounted, with large-beamed, fast Schmidt cameras and Volume Phase Holographic (VPH) transmission gratings. The design wavelength range is 370-900nm, at resolutions of R=1000and R=10000. Each spectrograph is fed by 250 fibers with 320 micron in diameter (corresponding 3.3 arcsec), composed of one F/4 Schmidt collimator, a dichroic beam-splitter, four VPH gratings, articulating Schmidt cameras that are optimized at blue band
(370-590 nm) and red band (570-900 nm), and field lens near the focal plane service as the vacuum window of CCD detector cryogenic head. In this paper, we present the testing result of the LRS on the image quality, spectra resolution, efficiency and observing spectra. |
| Keyword | Spectrograph Multi-fibers Spectra Survey. |
| Subject Area | 郭守敬望远镜（lamost） ; 天文光谱仪 |
| Document Type | 会议论文 |
| Identifier | http://ir.niaot.ac.cn/handle/114a32/614 |
| Collection | 会议论文 |
| Recommended Citation GB/T 7714 | Yonghui Hou,Yongtian Zhu,Zhongwen Hu,et al. Performance and sensitivity of Low Resolution Spectrographs for LAMOST[C]:SPIE,2010:Vol.7735 0C-1-9. |
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| Performance and sens（1815KB） | 开放获取 | CC BY-NC-ND | View Download | |||
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