Papers of the Board of Longitude

Correspondence regarding methods of establishing longitude by Jupiter's satellites, the planets and fixed stars, including W. Mitchel on finding longitude by eclipses of Jupiter's satellites and by the Moon's meridian passage; J. Rider on an instrument for observing eclipses of Jupiter's satellites; J. Ewart on eclipses of Jupiter's satellites observed at Calcutta; M.C. Groves on an instrument for observing the satellites of Jupiter; J. Playfair describing an instrument for observing Jupiter's satellites aboard a ship; A. Gilchrist on a compound telescope for observing Jupiter's satellites; W. Chevasse on a method of observing; C. Becher on a method of observing; correspondence on J. Hawke's reflecting telescope for observing Jupiter's satellites at sea; H. Liston on an observing chair for counteracting the effect of the motion of a ship; P. Lecount on a marine chair for observing Jupiter's satellites; J. Leslie on taking observations at a location away from the ship; proposals for determining the longitude at sea by observations of Jupiter's satellites; J. South on an eclipse of Jupiter's satellites; W. Fuller on the determination of longitude and latitude by the Sun's or a star's altitude; G. Douglas on a method using the altitude of the Sun or star; W. Innes on a method using the altitude and azimuth of the Sun; J. Lowe on a method using the 'southing' of Jupiter and the Moon; J. Boyle on a method using the altitude and azimuth of a fixed star; T. Johnstone on a method using the Sun's bearing and by the lowest ascension of the polar pointers; W.H. Mallison on a method using the Sun's meridian altitude; H. Balfour on a method using apparent azimuth altitudes; and J.L. Mackay on a method using the difference in time of the appearance of stars.

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