This machine ACTS as the focus of the giant distributed telescope, the largest real-time telescope ever, combining the signals collected from instruments across the world.
这台计算机充当这个巨大的、分布式望远镜的焦点。该望远镜是历史上最大的实时望远镜，把位于世界各地多个设备采集的信号综合了起来。
This is the distance (usually in mm.) from the lens (or primary mirror) to the point where the telescope is in focus (focal point).
就是从透镜(或者主反射镜)到焦点的距离，通常单位是毫米(mm)。
A telescope is an important tool to an astronomer, and a computer is an important tool for a computer scientist-but each is merely a tool, not the focus of study.
望远镜对于天文学家来说是一个重要的工具，同样计算机对于计算机科学家来说是一个重要工具——但是它仅仅只是一个工具，并不是研究的重点。
Turning away from the use of lenses, Newton devised the reflecting telescope, which makes use of a bowl-shaped metal mirror to focus the light from the stars.
牛顿不用镜头，而设计制作反射式望远镜，这种望远镜利用碗状的金属镜子来聚焦来自恒星的光。
Focus the telescope on that distant lighthouse.
对着那座远方的灯塔调节望远镜的镜头。
Focus the telescope ore that distant lighthouse.
将望远镜对准远处的灯塔。
The observer begins the telescope startup process around nautical twilight, preparing the telescope then adjusting the pointing and focus.
观测者大概在民用晨昏蒙影时开始启动望远镜，然后将望远镜指向目标并调好焦距。
According to the observation data obtained during 1980-1985, the author concluded an empirical relationship between the temperature and the changes of the Cassegrain focus of the 1 meter telescope.
根据1980—1985年的观测资料，本文统计了一米望远镜卡焦照相测光时焦距随温度变化的规律。
Firstly, a telescope system is made up with a concave lens and a long-focus convex lens, by which the angle of the parallel beam from the collimator can be change.
该方法借助一个焦距较长的凸透镜与被测凹透镜组成无焦系统，可以使准直管出射光束的张角发生改变；
A low resolution spectrometer is designed for use at the Cassegrain focus of the LAMOST 4-meter telescope.
针对大天区面积多目标天文望远镜的要求，提出了一种低分辨率光谱仪的设计方案。
A low resolution spectrometer is designed for use at the Cassegrain focus of the LAMOST 4-meter telescope.
针对大天区面积多目标天文望远镜的要求，提出了一种低分辨率光谱仪的设计方案。
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