Prof. Hua Bai Profile

Prof. Hua Bai

at NIAOT

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Author

Publications (5)

Proceedings Article | 11 January 2019 Paper

A fiber bundle probe based on stacking-capillary method for LAMOST fiber positioning

Jing Yang, Min Yang, Jiaming Zhang, Meng Wang, Gongdai Chen, Chunying Guan, Hua Bai, Libo Yuan

Proceedings Volume 10837, 1083702 (2019) https://doi.org/10.1117/12.2504754

KEYWORDS: Feedback signals, Telescopes, Energy efficiency, Structured optical fibers

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Proceedings Article | 6 July 2018 Presentation + Paper

Introduction on Chinese 12m optical/infrared telescope (LOT)

Xiangqun Cui, Yongtian Zhu, Ming Liang, Ding-qiang Su, Xiangyan Yuan, Zhongwen Hu, Hua Bai, Bozhong Gu

Proceedings Volume 10700, 107001P (2018) https://doi.org/10.1117/12.2313044

KEYWORDS: Telescopes, Mirrors, Spectrographs, Astronomical imaging, Image quality, Relays, Adaptive optics, Optical instrument design, Imaging spectroscopy, Astronomical telescopes

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Except for the spectroscopic survey telescope LAMOST, there are only two 2m class general purpose telescopes for precision observation in China (2.16m in Xinglong and 2.4m in Lijiang). Chinese astronomical community unanimously agrees that a 10m class large diameter general purpose optical/infrared telescope is urgently needed in China for a wide range of scientific research. The configuration for LOT with primary aperture 12m has been selected by Chinese government for the Thirteen-five-years plan in July, 2016. The concept design introduced here has been approved by Chinese astronomical community and Chinese Academy of Sciences in Dec. 2017, and submitted into the formal funding procedure of Chinese government. For quite a long time, China will very likely have only one 10m class telescope, therefore LOT should be a general-purpose telescope including multi-foci. The Nasmyth focus, prime focus, Cassegrain focus and coudé focus have been considered or reserved. Also, LOT will closely combine with the development of new technologies, such as AO, GLAO, fiber and instrument related new technologies, to make it has powerful capability for the frontier sciences. The four-mirror Nasmyth system, optimized according to the GLAO requirements, has a f-ratio about 14 and field of view 14 arecmin with excellent image quality. Some off-axis four-mirror Nasmyth optical systems are also presented in this paper. The primary focus system has a f-ratio 2 and 1.5degree field of view with 80% light energy encircled in 0.5 arecsec, which will let LOT complementary with the coming 30m-class telescopes. A double–layer Nasmyth platforms are proposed to accommodate more instruments, such as the wide field imaging spectrograph, broad band medium resolution spectrograph, high resolution spectrograph and multi-object fiber spectrographs and so on. Not all optical systems will be constructed in the same time, which will be in stages depending on the science and funding situation.

Proceedings Article | 27 July 2016 Paper

Maunakea spectroscopic explorer design development from feasibility concept to baseline design

Kei Szeto, Hau Bai, Steven Bauman, David Crampton, Nicolas Flagey, Mike Gedig, Peter Gillingham, Xuefei Gong, Kevin Ho, Nathan Loewen, Alan McConnachie, Shan Mignot, Richard Murowinski, Derrick Salmon, Will Saunders, Siegfried Stiemer, Tom Vermeulen, Kanoa Withington, Kai Zhang

Proceedings Volume 9906, 99062J (2016) https://doi.org/10.1117/12.2234213

KEYWORDS: Optical instrument design, Telescopes, Spectroscopy, Astronomical imaging, Spectrographs, Optical instrument design, Space telescopes, Computer aided design, Observatories, Control systems, Optical design

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Proceedings Article | 22 July 2014 Paper

A laser guide star system for LAMOST

Hua Bai, Xiangyan Yuan, Ming Liang

Proceedings Volume 9145, 91453Z (2014) https://doi.org/10.1117/12.2055810

KEYWORDS: Stars, Telescopes, Laser guide stars, Laser systems engineering, Mirrors, Sensors, Rayleigh scattering, Active optics, Diagnostics, Cameras

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Proceedings Article | 29 July 2010 Paper

Simulation of low-order AO performance on LAMOST

Hua Bai, Xiangyan Yuan

Proceedings Volume 7736, 773647 (2010) https://doi.org/10.1117/12.856824

KEYWORDS: Adaptive optics, Point spread functions, Telescopes, Image quality, Fourier transforms, Astronomical imaging, Diffraction, Turbulence, Stars, Astronomy

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