## Tables to Facilitate the Necessary Calculations in Nautical Astronomy ...: Designed to Enable Navigators to Determine Their Longitude from Lunar Observations ... Prefixed, an Explanation of the Tables ... |

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angle apparent altitude apparent distance approximate arch azimuth Chro Chronometer common logarithm computed latitude corresponding Cosecant Cosine Coversed daily variation degrees Diff equation of second EXAMPLE finding the latitude given greater altitude Greenwich Half interval half sine Half sum horizon glass instrument latitude by account less altitude Log ratio lunar distances meridian altitude meridian distance method middle minutes Moon Moon's CENTER Moon's Horizontal Parallar natural number Nautical Almanac nearest noon or midnight number from Table object observed altitude ºil parallax place of observation plane polar distance preceding prime vertical proportional logarithm quadrant reduced refraction remainder screw Secant sextant sides of noon ſº Star Star's subtract Sucoversed sum of numbers sum or difference Sun's declination Sun's right ascension Suversed Table G taken telescope transit true altitude true distance tude Versed zenith distance