 | Perry Fairfax Nursey - Industrial arts - 1830 - 512 pages
...Sir, Your very obedient servant, A. MACKINHOK. Sheffield, August 3, 1829. NEW METHOD OF OBTAINING THE DISTANCE BETWEEN THE SUN AND MOON, OR BETWEEN THE MOON AND A STAR, IN ORDER TO FIND THE bONGITÜDE AT SEA. Sir, — Having been engaged for a series of years in teaching... | |
 | David Thomson - Longitude - 1831 - 316 pages
...Chronometer by means of the Lunar Distances. RULE. 1. When there is a good opportunity for observing the distance between the Sun and Moon, or between the Moon and a Star, observe several sets of Distances with the Altitudes of the objects, and note the times by the Chronometer... | |
 | John Narrien - Astronomy - 1833 - 564 pages
...Ptolemy, and,- probably also, by Hipparchus, was an astrolabe for taking the distances in longitude between the sun and moon, or between the moon and a star. It consisted of two rings fixed at right angles to each other, one in the plane of the ecliptic and... | |
 | John Narrien - Astronomy - 1833 - 548 pages
...Ptolemy, and, probably also, by Hipparchus, was an astrolabe for taking the distances in longitude between the sun and moon, or between the moon and a star. It consisted of two rings fixed at right angles to each other, one in the plane of the ecliptic and... | |
 | John Harrison - Chronometers - 1835 - 338 pages
...sea, could also, by observations, ascertain what is the apparent distance, at the place where he is, between the Sun and Moon, or between the Moon and a star, and likewise their respective altitudes ; and if he could also, at the same moment, ascertain the time... | |
 | Perry Fairfax Nursey - Industrial arts - 1845 - 474 pages
...and 180° being negative. The same formula, it is manifest, will apply to the determination of the distance between the sun and moon, or between the moon and a fixed star, when their right ascensions and declinations are known ; so that this problem, when taken... | |
 | John Narrien - Geodesy - 1845 - 484 pages
...the same instant, appear to occupy if it were observed at two different stations. The celestial arc between the sun and moon, or between the moon and a star, at any instant, will evidently subtend different angles at the eyes of two observers at different stations... | |
 | David Thomson (inventor of the longitude scale.) - 1845 - 318 pages
...Chronometer by means of the Lunar Distances. RULE. 1. When there is a good opportunity for observing the distance between the Sun and Moon, or between the Moon, and a Planet, or a Star, observe several sets of distances with the Altitudes of the objects, and note the... | |
 | Sir J. Butler Williams - Geodesy - 1846 - 368 pages
...an 1 _. elevation of 18 feet . / True altitude of the sun's centre When a "lunar distance," ie, the distance between the sun and moon, or between the moon and a fixed star or planet, is required, the instrument is held in the plane passing through the eye and... | |
 | Basil Jackson - Military reconnaissance - 1847 - 410 pages
...minute of space in two minutes of time. Therefore, if we make an error of one minute in observing the distance between the sun and moon, or between the moon and a star, we make an error of two minutes in time, or thirty miles in longitude at the equator. By the effect... | |
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Hipparchus, was an astrolabe for taking the distances in longitude between the sun and moon, or between the moon and a star. 