huangcongwq 发表于 2017-5-12 15:44

Watch Comet Johnson Sprint Through Boötes

Watch Comet Johnson Sprint Through Boötes

http://www.skyandtelescope.com/observing/comet-johnson-makes-a-splendid-sprint-through-bootes/

牧夫最后一个大佬 发表于 2017-5-12 15:59

今天晚上继续观测V2
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