Practical Astronomy and Geodesy: including the projections of the Sphere and Spherical TrigonometryLongman, Brown, Green and Longmans, 1845 |
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Page viii
... circle defined . — A projected great circle intersects it in one of its diameters 25. ( Prop . I. ) Circles of the sphere , passing through the eye , are projected in straight lines - 26. ( Prop . II . ) If a circle of the sphere be ...
... circle defined . — A projected great circle intersects it in one of its diameters 25. ( Prop . I. ) Circles of the sphere , passing through the eye , are projected in straight lines - 26. ( Prop . II . ) If a circle of the sphere be ...
Page ix
... circle of the sphere , and the centre of the projection of the same circle , are in the representation of a great circle passing through the poles of the primitive and given circle - · Page 20 21 · 21 32. ( Prop . VII . ) The radius ...
... circle of the sphere , and the centre of the projection of the same circle , are in the representation of a great circle passing through the poles of the primitive and given circle - · Page 20 21 · 21 32. ( Prop . VII . ) The radius ...
Page xi
... circle to the corresponding arc on a great circle parallel to it ; and the converse 71. Two great circles making with each other a small angle at their line of section , and from a point in one of these an arc of a great circle being ...
... circle to the corresponding arc on a great circle parallel to it ; and the converse 71. Two great circles making with each other a small angle at their line of section , and from a point in one of these an arc of a great circle being ...
Page xii
... circle with respect to the meridian · - 76 - 77 · 77 99. Process for finding the polar point on the circle 100. Processes for finding the horizontal point - 101. Formula for obtaining the correction of a star's observed declination ...
... circle with respect to the meridian · - 76 - 77 · 77 99. Process for finding the polar point on the circle 100. Processes for finding the horizontal point - 101. Formula for obtaining the correction of a star's observed declination ...
Page xiii
... circle Page 89 90 90 91 ** *** 58 858 - 92 93 94 94 95 126. Description of the repeating circle 127. Manner of using the instrument in observing altitudes or zenith distances 95 96 128. Manner of observing horizontal and oblique angles ...
... circle Page 89 90 90 91 ** *** 58 858 - 92 93 94 94 95 126. Description of the repeating circle 127. Manner of using the instrument in observing altitudes or zenith distances 95 96 128. Manner of observing horizontal and oblique angles ...
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Common terms and phrases
aberration altitude angular distance apparent ascension and declination astronomical axis azimuth bisected celestial body celestial sphere centre circle colatitude computed considered correction corresponding cotan degrees described determined diameter difference disk earth ecliptic ellipse equal equator equatorial equinoctial point error expressed fixed star formula given Greenwich heliocentric horary horizontal parallax hour angle instant instrument interval latitude latter let fall mean meridian micrometer moon moon's motion movement Nautical Almanac nearly node noon nutation obliquity observed obtained P'PR parallax parallel perihelion perpendicular plane passing polar distance pole position projection radius vector refraction represented revolution revolve right angles right ascension satellite screw sector semidiameter sidereal sidereal clock sine solar sphere spherical triangle star's station subtracted sun's supposed surface tangent telescope transit transit telescope Trigon variation vertical wire zenith distance zero