The process is very simple. First, a photographic plate is coated with a light sensitive material.

这个过程非常简单，首先，把照相底片用感光材料包裹起来。

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First, a photographic plate is coated with a light-sensitive material.

首先，把一个照相底片覆盖上感光材料。

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First, the photographic plate is coated with a light-sensitive material. The plate is positioned so that the image received by the telescope is recorded on it.

首先，底版被光敏材料所覆盖，然后被放置在那里好让用望远镜观看的图像记录在上面。

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