The Geography of the Heavens, and Class Book of Astronomy; Accompanied by a Celestial Atlas |
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Page v
... sides , may be solved upon them in a very simple and satisfactory manner . They may be put into the hands of each individual in a class at the same time , but a globe cannot be . The student may conveniently hold them before his eye to ...
... sides , may be solved upon them in a very simple and satisfactory manner . They may be put into the hands of each individual in a class at the same time , but a globe cannot be . The student may conveniently hold them before his eye to ...
Page viii
... were made by taking the meridian distances of different fixed stars near the zenith , first on the south , and afterwards on the north side of the hill , when the plumb line of he Sector was found , in both cases , to INTRODUCTION. ...
... were made by taking the meridian distances of different fixed stars near the zenith , first on the south , and afterwards on the north side of the hill , when the plumb line of he Sector was found , in both cases , to INTRODUCTION. ...
Page 27
... side of the Equinoctial , the other half on the south side , making an angle with it of 234 ° . This angle is called the obliquity of the Ecliptic . The axis of the Eclip- tic makes the same angle with the axis of the heavens ; so that ...
... side of the Equinoctial , the other half on the south side , making an angle with it of 234 ° . This angle is called the obliquity of the Ecliptic . The axis of the Eclip- tic makes the same angle with the axis of the heavens ; so that ...
Page 31
... side of the equinoctial and parallel to it , are called Parallels of Declination . Those which are drawn up and down through the maps , at intervals of 15 ° , are called Meridians of Right Ascension , or Hour Circles . The scale at the ...
... side of the equinoctial and parallel to it , are called Parallels of Declination . Those which are drawn up and down through the maps , at intervals of 15 ° , are called Meridians of Right Ascension , or Hour Circles . The scale at the ...
Page 32
... side of the map will then be west , and the left hand east . In using the circumpolar maps he must suppose himself to face the pole , and to hold them in such a manner that the day of the given month shall be up- permost . The Celestial ...
... side of the map will then be west , and the left hand east . In using the circumpolar maps he must suppose himself to face the pole , and to hold them in such a manner that the day of the given month shall be up- permost . The Celestial ...
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Common terms and phrases
3d magnitude 4th magnitude ancient angle appear Arcturus Argo Navis Aries astronomers Auriga axis Beta brightest called Cassiopeia celestial centre Cepheus circle cluster colure comet constellation Cor Caroli declination degree Delta Denebola Describe diameter direction distinguished diurnal motion Earth east ecliptic equal equator equinoctial figure fixed stars Gamma globe head heavenly bodies heavens Hercules Herschel horizon Jupiter latitude length Libra light longitude mean distance Mercury meridian millions of miles minutes Moon Moon's motion naked eye nearly nebulæ night node north pole northern hemisphere observed orbit Orion parallax passing perihelion period Perseus phenomena planets Pleiades polar star position principal star represented revolution revolve right ascension rise satellites Saturn seasons seen side sidereal Sirius situated small stars solar system solstice southern spots Sun's supposed surface Taurus telescope tion triangle Ursa Venus vernal equinox Virgo visible whole number Zeta Zodiac