The Geography of the Heavens, and Class Book of Astronomy: Accompanied by a Celestial Atlas |
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Page 27
... angle with it of 2310. 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 the poles of each are 234 ° apart . This angle is perpetually decreasing ...
... angle with it of 2310. 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 the poles of each are 234 ° apart . This angle is perpetually decreasing ...
Page 28
... angles . Every place on the Earth , and every corresponding point in the heavens , is considered as having a meridian passing through it ; although astronomers apply 1 What are parallels of declination ? What is the tropic of cancer ...
... angles . Every place on the Earth , and every corresponding point in the heavens , is considered as having a meridian passing through it ; although astronomers apply 1 What are parallels of declination ? What is the tropic of cancer ...
Page 29
... angles with it . Longitude on the Earth , is distance either east or west from some fixed meridian , measured on the equator . Longitude in the Heavens , is distance east from the first point of Aries , measured on the ecliptic ...
... angles with it . Longitude on the Earth , is distance either east or west from some fixed meridian , measured on the equator . Longitude in the Heavens , is distance east from the first point of Aries , measured on the ecliptic ...
Page 48
... angle of the figure . It is 310 N. of the equinoctial , and 15 ° E. of El Rischa in the bight of the cord between the Two Fishes . It is directly 37 ° S. of Algol , and nearly in the same direction from the Fly . It makes an equilateral ...
... angle of the figure . It is 310 N. of the equinoctial , and 15 ° E. of El Rischa in the bight of the cord between the Two Fishes . It is directly 37 ° S. of Algol , and nearly in the same direction from the Fly . It makes an equilateral ...
Page 51
... angle at Algol , with the open part towards Cassiopeia . By means of this strikingly perfect figure , the three stars last mentioned may always be recog- nised without the possibility of mistaking them . Algenib may otherwise be readily ...
... angle at Algol , with the open part towards Cassiopeia . By means of this strikingly perfect figure , the three stars last mentioned may always be recog- nised without the possibility of mistaking them . Algenib may otherwise be readily ...
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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 Denebola diameter direction distinguished diurnal motion Earth east ecliptic equal equator equinoctial figure fixed stars Gamma globe head heavenly bodies heavens Hercules Herschel horizon Hydra Jupiter latitude length Libra light longitude maps mean distance Mercury meridian millions of miles minutes Moon Moon's motion naked eye nearest nearly nebulæ night node north pole northern observed orbit Orion parallax passing perihelion period Perseus phenomena planets Pleiades polar star principal star represented revolve right ascension rise satellites Saturn seasons seen side sidereal revolution Sirius situated small stars solar system solstice southern hemisphere spots Sun's supposed surface Taurus telescope tion triangle Ursa Ursa Major Venus vernal equinox Virgo visible whole number Zeta Zodiac