The Geography of the Heavens and Class-book of Astronomy: Accompanied by a Celestial Atlas |
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Page 10
... Poles of the Earth are the extremities of its axis . The Axis of the Heavens is the axis of the Earth produced both ways to the concave surface of the heavens . The Poles of the Heavens are the extremities of their axis . The Equator of ...
... Poles of the Earth are the extremities of its axis . The Axis of the Heavens is the axis of the Earth produced both ways to the concave surface of the heavens . The Poles of the Heavens are the extremities of their axis . The Equator of ...
Page 11
... Poles of the Horizon are two points , of which the one is directly overhead , and is called the Zenith ; the other is directly underfoot , and is called the Nadir . Vertical Circles are circles drawn through the Zenith and Nadir of any ...
... Poles of the Horizon are two points , of which the one is directly overhead , and is called the Zenith ; the other is directly underfoot , and is called the Nadir . Vertical Circles are circles drawn through the Zenith and Nadir of any ...
Page 12
... poles of the heavens , dividing the ecliptic into four equal parts , and mark the seasons of the year . One of them passes through the equinoxes at Aries and Libra , and is thence called the Equi- noctial Colure ; the other passes ...
... poles of the heavens , dividing the ecliptic into four equal parts , and mark the seasons of the year . One of them passes through the equinoxes at Aries and Libra , and is thence called the Equi- noctial Colure ; the other passes ...
Page 13
... poles that the tropics are from the equator . The northern is called the Arctic circle , and the southern the Antarctic circle . 16. Meridians are imaginary great circles drawn through the poles of the world , cutting the equator and ...
... poles that the tropics are from the equator . The northern is called the Arctic circle , and the southern the Antarctic circle . 16. Meridians are imaginary great circles drawn through the poles of the world , cutting the equator and ...
Page 14
... Pole are always , and those around the South Pole , never visible to us . 21. These constellations are represented on the sixth and seventh maps , called circumpolar maps , which are an exact con- tinuation of the others , and if joined ...
... Pole are always , and those around the South Pole , never visible to us . 21. These constellations are represented on the sixth and seventh maps , called circumpolar maps , which are an exact con- tinuation of the others , and if joined ...
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Common terms and phrases
3d magnitude 4th magnitude angle aphelion appear Arcturus Aries astronomers Auriga axis Beta blue bright star called Cassiopeia celestial Cepheus circle cluster comet constellation Cor Caroli declination degree Delta Denebola diameter distant companion DOUBLE STAR Earth Earth's orbit east ecliptic equator equinoctial figure fixed stars Gamma head heavens hemisphere Herschel horizon Jupiter latitude light longitude luminous Map VIII mean distance Mercury meridian miles minutes Moon Moon's motion naked eye nearly NEBULA node north pole northern Number of stars o'clock observed Orion pale yellow parallax pass perihelion period planet Pleiades polar position principal star Refracting telescopes refraction remarkable represented revolution revolve right ascension rising satellites Saturn seen shadow sidereal Sirius situated small stars solstice southern Sun's supposed surface Taurus TELESCOPIC OBJECTS TELESCOPIC OBJECTS.-Alpha tides tion triangle TRIPLE STAR Ursa Ursa Major Venus vernal equinox visible Zeta Zodiac