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日本研制成了直径45米的射电望远镜,工作频率1.4—86千兆赫以上,由主反射器、副反射器、主反射器转台等构成。为在频率高端有高的聚光能力,具有高的反射面精度和指向精度。反射面精度0.2毫米(均方根值)以下,指向精度:再现性误差0.001°以下,绝对值误差0.005°以下。主反射面是用600块1.3米×2.5米的面板安装在支撑结构上构成。面板采用了重量轻而刚性好的蜂窝夹层结构,以得到高精度。600块面板中,中间部分300块采用了热性能优良的碳纤维增强塑料夹层面板以防
Japan has developed a 45-meter diameter radio telescope operating frequency 1.4-86 gigahertz above, the main reflector, sub-reflector, the main reflector turntable and other components. In order to have a high light-gathering ability at the high frequency end, it has high reflection surface accuracy and pointing accuracy. Reflector surface accuracy 0.2 mm (root mean square) or less, pointing accuracy: reproducibility error of 0.001 ° or less, the absolute error of 0.005 ° or less. The main reflector is made of 600 panels of 1.3 mx 2.5 m mounted on a supporting structure. The panel uses a lightweight, rigid honeycomb sandwich structure for high precision. 600 panels, the middle part of 300 using a thermal performance of the carbon fiber reinforced plastic sandwich panel to prevent