File:Beijing Ancient Observatory 91047.jpg
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[edit]DescriptionBeijing Ancient Observatory 91047.jpg |
English: Azimuth Theodolite. Qing Dynasty, 1715. Ancient Observatory, Beijing
This instrument is used to find the altitude (elevation) and azimuth (compass direction) of an object in the sky, that is, the object's alt-azimuth coordinates. It operates on line-of-sight; first you line up the pointer on the object, then you read off the azimuth on the horizontal circle and the altitude on the vertical arc. |
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Author | G41rn8 |
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current | 20:41, 5 December 2015 | 2,592 × 1,944 (2.02 MB) | G41rn8 (talk | contribs) | User created page with UploadWizard |
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