远星点 [
yuǎn xīng diǎn]
[天] apastron
- 首先,我用一个钢株,大约2-4毫米,放在80英尺远的户外太阳底下,用太阳反射光作星点。
First, I use a steel ball (around 2 to 4mm) set up outside in the sun about 80 feet from the scope. Use the sun's reflection on the ball as a star. - 首先,我用一个钢株,大约2-4毫米,放在80英尺远的户外太阳底下,用太阳反射光作星点。
First, I use a steel ball (around 2 to 4mm) set up outside in the sun about 80 feet from the scope.
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