A Treatise on Practical Astronomy: As Applied to Geodesy and Navigation |
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Page vi
... REFRACTION - DIP OF THE Horizon . Definitions ..... To find equatorial horizontal parallax ...... . Parallax at any zenith distance . Form and dimensions of the earth .. Reduction of the latitude ... 100 102 .. 103 104 107 112 114 115 ...
... REFRACTION - DIP OF THE Horizon . Definitions ..... To find equatorial horizontal parallax ...... . Parallax at any zenith distance . Form and dimensions of the earth .. Reduction of the latitude ... 100 102 .. 103 104 107 112 114 115 ...
Page vii
... Refraction ...... Descartes ' laws .. Bessel's formula for refraction .... Refraction in right ascension and declination .. Dip of the horizon .... CHAPTER III . TIME . Sidereal time .... Solar time ..... Inequality of solar days ...
... Refraction ...... Descartes ' laws .. Bessel's formula for refraction .... Refraction in right ascension and declination .. Dip of the horizon .... CHAPTER III . TIME . Sidereal time .... Solar time ..... Inequality of solar days ...
Page ix
... refraction and elevation above sea - level .. 460 Observations of different weights ...... 474 CHAPTER VIII . THE ZENITH TELESCOPE . Description of instrument .. 478 Adjustment of instrument The observing list ....... Directions for ...
... refraction and elevation above sea - level .. 460 Observations of different weights ...... 474 CHAPTER VIII . THE ZENITH TELESCOPE . Description of instrument .. 478 Adjustment of instrument The observing list ....... Directions for ...
Page 14
... refraction , vari- ous methods have been developed for computing its numeri- cal value . The most elementary of these consists in expand- ing e2e ( h4 being written equal to t ) into a series of ascending powers of t , by means of ...
... refraction , vari- ous methods have been developed for computing its numeri- cal value . The most elementary of these consists in expand- ing e2e ( h4 being written equal to t ) into a series of ascending powers of t , by means of ...
Page 118
... factor 9.2260214 tan B = 0.3681846 cos B 9.5952317 cos 9.5952317 tan d = 2.6865304 sin = 9.9999991 sin N 9.5952308 proof 9.2260214 cos ( N + 8 ' ) = = 9.2260214 CHAPTER II . PARALLAX . - REFRACTION . - DIP 118 $ 67 . PRACTICAL ASTRONOMY .
... factor 9.2260214 tan B = 0.3681846 cos B 9.5952317 cos 9.5952317 tan d = 2.6865304 sin = 9.9999991 sin N 9.5952308 proof 9.2260214 cos ( N + 8 ' ) = = 9.2260214 CHAPTER II . PARALLAX . - REFRACTION . - DIP 118 $ 67 . PRACTICAL ASTRONOMY .
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Common terms and phrases
accuracy altitude angle applied approximation arithmetical mean ascension and declination axis azimuth Bessel catalogue celestial sphere centre chronograph chronometer circle circumpolar stars clamp co-ordinates coefficients collimation computation constant convenient culmination determined difference differential dt dt earth east ecliptic elongation emersion ephemeris equal example follows formulæ geocentric given gives Greenwich horizon hour-angle instant latitude limb logarithms longitude mean solar measured meridian method micrometer middle thread moon moon's right ascension multiplied Nautical Almanac obtained occultation parallax plane position prime vertical probable error proper motion reading reduced refraction right ascension screw semidiameter sextant sidereal sin² star's stars observed Substituting subtract telescope tion transit instrument unknown quantities values vernier weight write zenith distance ΙΟ
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