首架南极天文望远镜CSTAR的光学系统

Optical System of Chinese First Antarctic Astronomical Telescope-CSTAR

2008年1月中国自行研制的首台南极小望远镜阵CSTAR成功安装在南极内陆最高点DOME A,用于天文观测.正如天文学家预言,南极是个极好的天文台址,CSTAR传回的清晰图像,为我们进一步证实了在南极展开天文科考的可能性与优越性.在此重点介绍我国首台南极望远镜设备CSTAR的光学系统,以及为保证在南极低温环境下望远镜保持高质量成像所采取的措施,最后给出观测结果.

Chinese Small Telescope Array （CSTAR） , used for astronomical observation in Antarctic, was successfully mounted in the inland highest plateau- Dome A in Jan. 2008 by Chinese 24TM research expedition team, which is the first Chinese Antarctic astronomical telescope. Just like what the astronomers predicted, Dome A is an excellent astronomical site. The clear images sent back by the CSTAR have further proved the possibility and advantages for doing astronomical research in Antarctic. This paper emphasizes on the part of the optical system of CSTAR, and the methods adopted to guarantee a high quality images under the ultra-low temperature in Dome A. The real observation results from Dome A are also given at the end of the paper.