Practical Astronomy and Geodesy: Including the Projections of the Sphere and Spherical Trigonometry. For the Use of the Royal Military CollegeLongman, Brown, Green, and Longmans, 1845 - 427 pages |
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Page xx
... of the fixed stars uncertain 298. Manner of determining that parallax by meridional observa- tions 299. Method employed by Bessel to ascertain the parallax by double stars Art . 300. Expression of the parallax of a star XX CONTENTS .
... of the fixed stars uncertain 298. Manner of determining that parallax by meridional observa- tions 299. Method employed by Bessel to ascertain the parallax by double stars Art . 300. Expression of the parallax of a star XX CONTENTS .
Page xxi
... Expression of the parallax of a star in terms of its maximum value - 301. Investigation of the parallax in a line joining the two which constitute a double star 302. Bessel's determination of the constant of parallax for 61 Cygni Page ...
... Expression of the parallax of a star in terms of its maximum value - 301. Investigation of the parallax in a line joining the two which constitute a double star 302. Bessel's determination of the constant of parallax for 61 Cygni Page ...
Page xxvii
... expression for the length of a meridional arc on the terrestrial spheroid ; having , by ob- servation , the latitudes of the extreme points , with as- sumed values of the equatorial radius and the eccentricity of the meridian 391 421 ...
... expression for the length of a meridional arc on the terrestrial spheroid ; having , by ob- servation , the latitudes of the extreme points , with as- sumed values of the equatorial radius and the eccentricity of the meridian 391 421 ...
Page 26
... expressed by a given arc or a given number of degrees , a converse operation must be performed . q Through 4 and C , the centre of the primitive circle , draw the diameter AB ; and draw PS at right angles to it : from P draw the line PQ ...
... expressed by a given arc or a given number of degrees , a converse operation must be performed . q Through 4 and C , the centre of the primitive circle , draw the diameter AB ; and draw PS at right angles to it : from P draw the line PQ ...
Page 28
... expressed ; or at a dis- tance equal to the supplement of that arc , if the latter were greater than a quadrant . About P as a A M a P E R N B H T pole , describe the projection QR of a great circle ( art . 35. ) ; and if the data be ...
... expressed ; or at a dis- tance equal to the supplement of that arc , if the latter were greater than a quadrant . About P as a A M a P E R N B H T pole , describe the projection QR of a great circle ( art . 35. ) ; and if the data be ...
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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 circumference co-ordinates colatitude computed considered correction cotan degrees described determined diameter difference earth ecliptic ellipse equal equator equatorial equinoctial point expressed fixed star formula geocentric given Greenwich horary horizontal parallax hour angle inclination instant instrument intersection interval latitude latter let fall longitude mean meridian micrometer moon moon's motion Nautical Almanac node nutation obliquity observed obtained parallax parallel perihelion perpendicular plane passing polar distance pole position primitive circle radius vector refraction represented revolution revolve right angles right ascension satellite sector semidiameter side sidereal sin.² sine sphere spherical triangle star's station substituting subtended subtracted sun's supposed surface tangent telescope transit transit telescope Trigon trigonometry vertical whence wire zenith distance zero