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Optical design of imaging and spectrograph for 4m telescope in China
Hangxin Ji1,2; Yongtian Zhu1,2; Zhongwen Hu1,2; Yi Chen1,2; Lei Wang1,2; Mingming Xu1,2; Songxin Dai1,2; Huatao Zhang1,2
2018-07-06
Conference NameSPIE Ground-based and Airborne Instrumentation for Astronomy VII(VOL.10702)
Source PublicationGround-based and Airborne Instrumentation for Astronomy VII
Conference Date2018-6-10
Conference PlaceAustin, Texas, United States
Abstract
The design and performance of a three-channel image and long-slit spectrograph for the new 4-m telescope in China are described. The direct imaging covers a 3 arcmin by 3 arcmin field of view and a large wavelength range 370-1,600 nm, it has two optical channels and one near infrared channel with different filters. The spectrograph with a long slit is to provide two observing modes including the following spectral resolutions: R1000 and R5000. For dispersing optical elements it use volume-phased holographic grisms (VPHG) at each of the spectroscopic modes to simplify the camera system. The low resolution mode (R1000) is provided by consecutive observations with the spectral ranges: 360-860 nm, however it adopts only one VPHG for the first light. The spectral range of medium resolution mode (R5000) is 460-750nm, it is constrained with the use of a 4k × 4k CCD detector of 15 μm pixel size. Peak efficient in the spectrograph are achieved to be higher than 50% in different resolution mode.
KeywordImaging And Spectrograph Three-channel Imaging Low And Medium Resolution Spectrograph Vphg
Subject Area天文技术与方法
Language英语
Document Type会议论文
Identifierhttp://ir.niaot.ac.cn/handle/114a32/1555
Collection中国科学院南京天文光学技术研究所_会议论文
天文光谱和高分辨成像技术研究室_会议论文
Affiliation1.南京天文光学技术研究所
2.天文光学技术重点实验室
Recommended Citation
GB/T 7714
Hangxin Ji,Yongtian Zhu,Zhongwen Hu,et al. Optical design of imaging and spectrograph for 4m telescope in China[C],2018.
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