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 xii
... error 89. Method of ascertaining that the meridional wire and those which ... error of collimation in azimuth and in altitude · - 107. Description of the zenith ... index of the equatorial circle · * 88888 89 Art . 116. Employment of the ...
... error 89. Method of ascertaining that the meridional wire and those which ... error of collimation in azimuth and in altitude · - 107. Description of the zenith ... index of the equatorial circle · * 88888 89 Art . 116. Employment of the ...
Page xiii
... index , and horizon glasses on a reflecting instrument 99 99 - 100 . 101 - 101 - 101 - 101 - 102 136. Manner of finding the index error of such instrument 137. Manner of placing the line of collimation parallel to the plane of the ...
... index , and horizon glasses on a reflecting instrument 99 99 - 100 . 101 - 101 - 101 - 101 - 102 136. Manner of finding the index error of such instrument 137. Manner of placing the line of collimation parallel to the plane of the ...
Page 82
... error of collimation in altitude or the index error of the instrument ) , the apparent zenith distances of a star must be observed when on the meridian , with the graduated face of the vertical circle in contrary positions ; and then ...
... error of collimation in altitude or the index error of the instrument ) , the apparent zenith distances of a star must be observed when on the meridian , with the graduated face of the vertical circle in contrary positions ; and then ...
Page 83
... index error . 107. The Zenith Sector is an instrument by which the angular distance of a star from the zenith of the observer is immediately obtained with great accuracy , the star being on , or very near the plane of the meridian of ...
... index error . 107. The Zenith Sector is an instrument by which the angular distance of a star from the zenith of the observer is immediately obtained with great accuracy , the star being on , or very near the plane of the meridian of ...
Page 87
... index of the declination circle being at or near zero when the telescope is directed to the pole of the equator ... error of the polar axis in altitude . This error , in an instrument constructed like that which is represented in the ...
... index of the declination circle being at or near zero when the telescope is directed to the pole of the equator ... error of the polar axis in altitude . This error , in an instrument constructed like that which is represented in the ...
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Practical Astronomy and Geodesy: Including the Projections of the ..., Volume 5 John Narrien No preview available - 2016 |
Common terms and phrases
angular distance apparent ascension and declination astronomical azimuth bisected celestial body celestial sphere centre circle passing circumference colatitude computed considered correction corresponding cosine cotan degrees described determined diameter difference earth ecliptic ellipse equal equator equatorial equinoctial point expressed fixed star formula geocentric given graduation Greenwich Greenwich mean horary motions horizontal parallax hour angle index error instant instrument interval latitude latter let fall limb longitude mean noon meridian micrometer moon moon's Nautical Almanac node observed altitude obtained optical axis orbit parallax parallel perihelion perpendicular plane passing polar distance pole position projection radius refraction represented revolution revolve right angles right ascension satellite screw sector semidiameter side sidereal sidereal clock sine sphere spherical triangle star's station subtended subtracted supposed surface tangent transit telescope true variation vertical wire zenith distance zero
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