赤道坐标系统
赤道坐标系统-
赤道坐标系统用来显示天体在天球上的真实位置。
RA / dec coordinates are the standard system used to specify the position of an object in the sky .
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赤道坐标系统在显示天球某一天区很有用，对有装了赤道仪的望远镜的观测者非常重要。
RA / dec coordinates are most often used for " finder charts " showing a relatively small area of the sky , and are extremely useful for equatorially-mounted telescopes .