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1990年6月,就在哈勃太空望远镜发射升空两个月后,美国国家航空和航天局接到了令人沮丧的消息:望远镜高度近视。 由于主镜的精密度出现了微乎其微的误差(一根头发的1/50),因而造成图像模糊。科学家原以为它能辨别140亿光年的物体,但是实际上它只能显示40亿光年的物体。真所谓差之毫厘,谬以千里。另外,望远镜还患有不太严重的“震颤症”.原因是:由于温差,望远镜太阳能电池板的金属支
In June 1990, just two months after the launch of the Hubble Space Telescope, the National Aeronautics and Space Administration received frustrating news: The telescope is highly myopic. Due to the slightest error in the precision of the primary mirror (1/50 of a hair), the image is blurred. Scientists originally thought that it could distinguish between 14 billion light-year objects, but in fact it could only show 4 billion light-year objects. The so-called difference between the slightest and the most impressive. In addition, the telescope also suffers from less severe “tremor”. The reason is: due to the temperature difference, the telescope solar panel metal support