A Treatise on Practical Astronomy: As Applied to Geodesy and Navigation |
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Page v
... computation ...... . 29 32 35 36 37 Computation of coefficients by a table of squares . Solution of normal equations .... Proof - formulæ ............... Weights and probable errors of the unknown quanti' ́es .. Mean errors of the ...
... computation ...... . 29 32 35 36 37 Computation of coefficients by a table of squares . Solution of normal equations .... Proof - formulæ ............... Weights and probable errors of the unknown quanti' ́es .. Mean errors of the ...
Page vi
... computation ..... Differential coefficients .... The ephemeris - Lunar distances .. PRACTICAL ASTRONOMY . CHAPTER I. THE CELESTIAL SPHERE - TRANSFORMATION OF Co - ordinates . Spherical co - ordinates ..... The horizon - Altitude ...
... computation ..... Differential coefficients .... The ephemeris - Lunar distances .. PRACTICAL ASTRONOMY . CHAPTER I. THE CELESTIAL SPHERE - TRANSFORMATION OF Co - ordinates . Spherical co - ordinates ..... The horizon - Altitude ...
Page ix
... Computation of longitude .... 444 Correction for refraction and elevation above sea - level .. 460 Observations of different weights ...... 474 CHAPTER VIII . THE ZENITH TELESCOPE . Description of instrument .. 478 Adjustment of ...
... Computation of longitude .... 444 Correction for refraction and elevation above sea - level .. 460 Observations of different weights ...... 474 CHAPTER VIII . THE ZENITH TELESCOPE . Description of instrument .. 478 Adjustment of ...
Page 14
... computation , but for large values of t it becomes diverging . For this case , as well as for the case where t is small , a series may be obtained by successive ap- plications of the formula for integration by parts , Ludv udv = uv ...
... computation , but for large values of t it becomes diverging . For this case , as well as for the case where t is small , a series may be obtained by successive ap- plications of the formula for integration by parts , Ludv udv = uv ...
Page 15
... computation . Table I. of this volume gives the values of -dt for values of t from o to ∞ . We readily find 2 Se- dt from this table that the value of hr which satisfies equation ( 18 ) lies between .47 and .48 . An interpolation ...
... computation . Table I. of this volume gives the values of -dt for values of t from o to ∞ . We readily find 2 Se- dt from this table that the value of hr which satisfies equation ( 18 ) lies between .47 and .48 . An interpolation ...
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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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