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格魯姆布里奇子午儀

格魯姆布里奇子午儀

格魯姆布里奇子午儀是艾德華·特勞頓在1806年為史帝芬·格魯姆布里奇建造的子午儀。格魯姆布里奇用它編輯星表的完整資料:Catalogue of Circumpolar Stars(拱極星表)[1]子午儀相較於牆儀(用於測量極距)的優勢是它可以在同一時間測量赤經和赤緯[2]

它的口徑是3.5吋和5英尺長的焦距,安裝在兩個4尺孔徑圈的石墩上[2]。格魯姆布里奇用這件儀器測量超過4,000顆環繞著北極圈的拱極星位置[2]

這件儀器最後被詹姆斯·南買下,在1870年之前都安置在他位於肯辛頓的天文台[2]

參考資料

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  1. ^ Groombridge Transit Circle, 1820. -- Science and Society Picture Library. [2016-07-27]. (原始内容存档于2016-08-16). 
  2. ^ 2.0 2.1 2.2 2.3 King, Henry C., (1955/2003). The History of the Telescope. Cambridge, Massachusetts: Sky Publishing Corporation. Retrieved from Google Books in 2010: The History of the Telescope, by Henry C. King, page 234-6

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格魯姆布里奇子午儀
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