22 July 2014 The AST3 project: Antarctic Survey Telescopes for Dome A
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Abstract
The AST3 project consists of three large field of view survey telescopes with 680mm primary mirror, mainly for observations of supernovas and extrasolar planets searching from Antarctic Dome A where is very likely to be the best astronomical site on earth for astronomical observations from optical wavelength to thermal infrared and beyond, according to the four years site testing works by CCAA, UNSW and PRIC. The first AST3 was mounted on Dome A in Jan. 2012 and automatically run from March to May 2012. Based on the onsite winterization performance of the first AST3, some improvements such as the usage of high resolution encoders, defrosting method, better thermal control and easier onsite assembly et al were done for the second one. The winterization observation of AST3-2 in Mohe was carried on from Nov. 2013 to Apr. 2014, where is the most northern and coldest part of China with the lowest temperature around -50°. The technical modifications and testing observation results will be given in this paper. The third AST3 will be optimized from optical to thermal infrared aiming diffraction limited imaging with K band. Thus the whole AST3 project will be a good test bench for the development of future larger aperture optical/infrared Antarctic telescopes such as the proposed 2.5m Kunlun Dark Universe Survey Telescope project.
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Xiangyan Yuan, Xiangyan Yuan, Xiangqun Cui, Xiangqun Cui, Bozhong Gu, Bozhong Gu, Shihai Yang, Shihai Yang, Fujia Du, Fujia Du, Xiaoyan Li, Xiaoyan Li, Daxing Wang, Daxing Wang, Xinnan Li, Xinnan Li, Xuefei Gong, Xuefei Gong, Haikun Wen, Haikun Wen, Zhengyang Li, Zhengyang Li, Haiping Lu, Haiping Lu, Lingzhe Xu, Lingzhe Xu, Ru Zhang, Ru Zhang, Yi Zhang, Yi Zhang, Lifan Wang, Lifan Wang, Zhaohui Shang, Zhaohui Shang, Yi Hu, Yi Hu, Bin Ma, Bin Ma, Qiang Liu, Qiang Liu, Peng Wei, Peng Wei, "The AST3 project: Antarctic Survey Telescopes for Dome A", Proc. SPIE 9145, Ground-based and Airborne Telescopes V, 91450F (22 July 2014); doi: 10.1117/12.2055624; https://doi.org/10.1117/12.2055624
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