A high-school astronomy: in which the descriptive, physical, and practical are combined .. (1859)
Mattison, Hiram, 1811-1868 · New York, Mason brothers · leaf 120
star D. The ship E, having Greenwich time, aswell as her own local time, sails from London west-ward ; but on observing the moon when, by Greenwich time, she ought to be at C, sheis found to be at F, or only about 20° west of the star D. It is therefore obvious that 244. What celebrated chart… … 116 ASTRONOMY. the ship is west of Greenwich, as the moon appears east of her Greenwich place. Fromthis difference between her place as laid down in the tables, and her observed place, asreferred to certain prominent stars, the mariner determines how far he is east or west ofthe meridian of…
Astronomy
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