A Treatise on Practical Astronomy: As Applied to Geodesy and Navigation |
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Page vi
... Altitude - Azimuth ... The equator - Declination - Hour - angle - Right ascension .. The ecliptic - Longitude - Latitude ..... Having altitude and azimuth , to find declination and hour - angle .. Having declination and hour - angle ...
... Altitude - Azimuth ... The equator - Declination - Hour - angle - Right ascension .. The ecliptic - Longitude - Latitude ..... Having altitude and azimuth , to find declination and hour - angle .. Having declination and hour - angle ...
Page viii
... altitude of the sun ... By a single altitude of a star . Conditions favorable to accuracy . Differential formulæ .... Equal altitudes of a star . PAGE 215 220 222 223 228 Equal altitudes of the sun .. 230 Latitude .. 233 By the zenith ...
... altitude of the sun ... By a single altitude of a star . Conditions favorable to accuracy . Differential formulæ .... Equal altitudes of a star . PAGE 215 220 222 223 228 Equal altitudes of the sun .. 230 Latitude .. 233 By the zenith ...
Page 102
... altitude and azi- muth . THE ALTITUDE of a heavenly body is its distance above the horizon , measured on a vertical circle passing through that body . THE AZIMUTH of a heavenly body is the distance from the north or south point of the ...
... altitude and azi- muth . THE ALTITUDE of a heavenly body is its distance above the horizon , measured on a vertical circle passing through that body . THE AZIMUTH of a heavenly body is the distance from the north or south point of the ...
Page 103
... altitude and azı- muth of any star are constantly changing their values . The Equator .. 60. The points in which the meridian intersects the equa- tor are the north and south points of the equator . The points in which the earth's axis ...
... altitude and azı- muth of any star are constantly changing their values . The Equator .. 60. The points in which the meridian intersects the equa- tor are the north and south points of the equator . The points in which the earth's axis ...
Page 105
... Altitude , h ; - SH = Azimuth , a ; OZ Zenith distance , z ; = PON . P. distance , p . H S FIG . I. 62. The following diagram will assist in giving definiteness to the symbols employed in the foregoing . The notation should be ...
... Altitude , h ; - SH = Azimuth , a ; OZ Zenith distance , z ; = PON . P. distance , p . H S FIG . I. 62. The following diagram will assist in giving definiteness to the symbols employed in the foregoing . The notation should be ...
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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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