Difference between revisions of "Zenith"
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Latest revision as of 23:58, 24 February 2009
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(Observer's) Zenith
The point at which a straight line joining the centre of the earth to the observer's position meets the celestial sphere. To a particular observer it is the highest point of the celestial sphere.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
