American practical navigator: an epitome of navigation and nautical astronomy (1914)
Bowditch, Nathaniel, 1773-1838, Logan, George Wood, 1868-1915, United States. Navy Dept. Bureau of Equipment · Washington, Govt. Print. Off · leaf 121
s, bearing east from the meridian, so lay off Q ^c =2 hours tothe east from Q. Now find from the Almanac the R. A.of the ^ which is 14 hours, and lay off >fc V equal to 14h tothe westward from %. The L. S. T. is then QV, equalsV * — Q *, equals the R. A. * —II. A. *, equals 14h —2h equals 12… … CHAPTER X. COKRECTION OF OBSERVED ALTITUDES, 294. The true altitude of a heavenly body at any place on the earths surfaceis the altitude of its center, as it would be measured by an observer at the center ofthe earth, above the plane passed through the center of the earth at right anglesto the…
Navigation · Nautical astronomy
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