照片拍摄于1838年，角度是从高处的一扇窗子对准巴黎的圣殿大道。 摄影师采用了全新的达盖尔摄影术，银版捕捉到一位停下来擦鞋的绅士。

Shot from a window high above the Boulevard du Temple in Paris in 1838, using the brand new daguerrotype process, the plate captures a solitary gentleman who has stopped to have his shoes shined.

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单反射镜结构转台中，通信光先经反射镜反射，再配合方位、俯仰方向的角度调整，实现光轴的精确对准。

In the process of work, the laser was reflected by the mirror at first, then turntable adjusted the reflection direction through changing the Angle of azimuth and pitching for accurately pointing.

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你发现必须把望远镜转一个轻微的角度以和该物体对准。

You'd find that you have to turn the telescope at a slight Angle to line up the object.

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