Supplement to the Horary Tables, for Finding the Time by Inspection: To Facilitate the Operations for Obtaining the Longitude at Sea, by Chronometers and Lunar Observations : Also for Finding Both the Latitude and Time, at Any Time of the Day, by Noting the Exact Interval, by a Chronometer, Between Two Observed Altitudes of the Sun; Also in the Twilight, Or at Any Time of the Night, by Two Observed Altitudes of a Fixed Star: Or by the Simultaneous Observations of the Altitudes of Any Two Celestial Objects

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author, 1827 - Astronomy - 121 pages
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