A Treatise on Practical Astronomy: As Applied to Geodesy and Navigation |
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Page vi
... declination and hour - angle .. Having declination and hour - angle , to find altitude and azimuth To find hour - angle of star in the horizon .... To find distance between two stars .... CHAPTER II . PARALLAX - REFRACTION - DIP OF THE ...
... declination and hour - angle .. Having declination and hour - angle , to find altitude and azimuth To find hour - angle of star in the horizon .... To find distance between two stars .... CHAPTER II . PARALLAX - REFRACTION - DIP OF THE ...
Page vii
... declination .. 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 ...
... declination .. 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 ...
Page x
... declination . Proper motion .... Expansion into series ..... Star catalogues and mean places of stars . Nutation .... Reduction to apparent place ... Aberration .... The fictitious year ..... The Tabula Regiomontana . Conversion of mean ...
... declination . Proper motion .... Expansion into series ..... Star catalogues and mean places of stars . Nutation .... Reduction to apparent place ... Aberration .... The fictitious year ..... The Tabula Regiomontana . Conversion of mean ...
Page 70
... declination of the sun , moon , and planets , places of fixed stars , etc. , which are functions of the time . This is assumed as the independent variable , or argument as it is termed by astronomers . The ephemeris gives a series of ...
... declination of the sun , moon , and planets , places of fixed stars , etc. , which are functions of the time . This is assumed as the independent variable , or argument as it is termed by astronomers . The ephemeris gives a series of ...
Page 90
... declination is expressed in seconds of arc . 52. By means of these differential coefficients as given in the ephemeris , the second differences are taken into account in the interpolation in a very simple manner , for we have to second ...
... declination is expressed in seconds of arc . 52. By means of these differential coefficients as given in the ephemeris , the second differences are taken into account in the interpolation in a very simple manner , for we have to second ...
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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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