The Nautical Almanac and Astronomical Ephemeris for the Year ...order of the Lords Commissioners of the Admiralty, 1820 |
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Términos y frases comunes
12 Hours Aldebaran Antares Aquilæ Arietis Astronomer Royal Centre from SUN Commissioners computed Latitude corrected D's Node DAVIES GILBERT Decl Diff DISTANCES of Moon's Emersions Ephemeris Equation of second Fomalhaut further enacted Geocentric Greenwich H GEORGIAN h SATURN H. M. S. Days Heliocentric Immersions Interval JOHN POND Latitude by account Longitude at Sea Lord High Admiral Majesty Method Midn Midnight Noon Month Moon's Centre Moon's Latitude Moon's Longitude MOON'S Semidiameter Motion NAUTICAL ALMANAC nearest Noon Northern Pole NUTATION O's Semidiam Pacific Oceans Parallax Passage Declin passing Merid passing the Meridian Pegasi Person or Persons Phenomena Place PLANETS Pollux Proportional Logarithm Refraction Regulus remarkable Days Requisite Tables Rewards right Ascension SAMUEL VINCE SATELLITES OF JUPITER Ship Sine Spica STARS EAST STARS WEST subtracted Sun's Longitude Sund Sunday TOBIA MAYER Trinity vsin Week XVh XVIII
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Página xv - Highness is further pleased, in the name and on the behalf of his Majesty, and by and with the advice...
Página 173 - Distance should be taken from Two Stars, or the Sun and a Star on each Side of her, as often as Opportunity permits...
Página viii - Offices therein named, for the time being, were appointed Commissioners for the said Discovery : And whereas by an Act passed in the Sixteenth Year of the Reign of His present Majesty, intituled,
Página viii - Pounds in any one Year, towards the making, correcting, or publishing any such Experiments, Modes, Observations, Calculations, or Tables. VII. And whereas it is expedient that the said Commissioners should be enabled to cause to be ascertained, as accurately as may be, the Latitude and Longitude of Places whereof the exact Situation hath not been already sufficiently ascertained ; Be it enacted. That they may expend or cause to be expended any Sum not exceeding in the whole One Thousand Pounds in...
Página 165 - It was hoped that some Means might be found of using proper Telescopes on Shipboard to observe these Eclipses : and could this be effected, it would be of great service in ascertaining the Longitude of a Ship from time to time. In my voyage to Barbadoes, under the Directions of the COMMISSIONERS OF LONGITUDE, in 1763, I made a full trial of the late Mr.
Página ix - Davis's Streights may have Opportunities of approaching the North Pole: And whereas Approaches towards the Northern Pole may tend greatly to the Discovery of a Communication between the Atlantic and Pacific Oceans...
Página ix - Hemisphere, the Owner or Owners of such Ship or Ships, Vessel or Vessels, if belonging to any of His Majesty's Subjects, or the Commander or Commanders, Officers, Seamen, and Marines of...
Página 173 - Ephemeris, always within a degree, and generally much nearer, yet it will conduce to uill greater Accuracy, if the Obferver takes the Diftance of the Moon from Two Stars, or the Sun and a Star, or, when the Moon is between 90° and 1zo°.
Página 160 - Stars are expressed by Bayer's Characters of Reference. The Conjunction of the Moon or a Planet with a Star is denoted by prefixing the Character of the Moon or Planet to that of the Star, the time of the Conjunction being placed immediately before. The...
Página 165 - Satellites are set down on the lower part of Page III. and to mean Time. They are well known to afford the readiest, and for general Practice the best Method of settling the Longitudes of Places at Land ; and it is by their Means principally that Geography has been so much reformed...