详细分析了主要的误差来源，分别是由参考星决定的局部参考架的误差约0.15角秒，目标量度坐标误差约为0.45角秒。

There were two main part of error source, the local reference system which was about 0.15as and the measurement coordinates of objects which were about 0.45as.

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详细分析了主要的误差来源，分别是由参考星决定的局部参考架的误差约0.15角秒，目标量度坐标误差约为0.45角秒。

There were two main part of error source, the local reference system which was about 0.15as and the measurement coordinates of objects which were about 0.45as.

youdao