The current status of the imaging and spectrogragh (IMSP) for 4m telescope

Hangxin Ji; Yi Chen; Lei Wang; Songxin Dai; Huatao Zhang; Zhen Tang; Jun Li; Qiqige Xin; Yongtian Zhu; Zhongwen Hu

doi:10.1117/12.2560129

13 December 2020 The current status of the imaging and spectrogragh (IMSP) for 4m telescope

Hangxin Ji, Yi Chen, Lei Wang, Songxin Dai, Huatao Zhang, Zhen Tang, Jun Li, Qiqige Xin, Yongtian Zhu, Zhongwen Hu

Proceedings Volume 11447, Ground-based and Airborne Instrumentation for Astronomy VIII; 114475O (2020) https://doi.org/10.1117/12.2560129
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

IMSP is the versatile first-light instrument under construction for the 4m telescope in China. The special feature of IMSP is the multimode operation modes and high-efficiency. Direct imaging mode is designed to work in a synchronous multi-color bands covering from 360 to 1700 nm using two dichroic mirrors with a 3’x3’ field of view (FOV). Long-slit spectrograph mode supports two spectral resolutions operation modes (R=1000 and 5000) via different combination of Volume Phase Holographic Prisms to cover the whole spectrum in visible. High resolution spectrograph mode (R=30000-60000) with wavelength range from 380 to 800 nm is reserved using fiber link system connected from Nasmyth foci to the enviroment controled room. The IMSP is planned to strart commssion at the end of 2021. In this paper, the lastest status of IMSP development will be given, including the final optical design and the integration of each sub-system.

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Hangxin Ji, Yi Chen, Lei Wang, Songxin Dai, Huatao Zhang, Zhen Tang, Jun Li, Qiqige Xin, Yongtian Zhu, and Zhongwen Hu "The current status of the imaging and spectrogragh (IMSP) for 4m telescope", Proc. SPIE 11447, Ground-based and Airborne Instrumentation for Astronomy VIII, 114475O (13 December 2020); https://doi.org/10.1117/12.2560129

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