うーん。副鏡裏の避雷針は45mだなあhttps://ja.wikipedia.org/wiki/%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB:Nobeyama_Radio_Observatory_45-m_Telescope.jpghttps://ja.wikipedia.org/wiki/%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB:National_Astronomical_Observatory_of_Japan_VERA_Ogasawara_Station.jpg
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