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旧 Dec 16th, 2012, 20:59     #6
jang
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默认 可以用望远镜,也可以用长焦头

光学的东西追求是无止境的.具体到钱上来说,望远镜和镜头都是用来烧钱的.
不过赤道仪是最重要的,要精确跟踪,才能进行长时间曝光.
根据目标大小,一般可以用200毫米以上的镜头或者消色差望远镜.
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