The Geography of the Heavens and Class-book of Astronomy: Accompanied by a Celestial Atlas |
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Page 7
... Equinoxes - Obliquity of the Ecliptic , " XIII . Philosophy of the Tides , 270 280 " XIV . The Seasons - Different Lengths of the Days and Nights , 287 66 XV . The Harvest Moon , and Horizontal Moon , 293 " XVI . Refraction and Twilight ...
... Equinoxes - Obliquity of the Ecliptic , " XIII . Philosophy of the Tides , 270 280 " XIV . The Seasons - Different Lengths of the Days and Nights , 287 66 XV . The Harvest Moon , and Horizontal Moon , 293 " XVI . Refraction and Twilight ...
Page 11
... Equinoxes . The Sun rises in one of these points on the 21st of March ; this point is called the Vernal Equinox . It sets in the opposite point on the 23d of September ; this point is called the Autumnal Equinox . One half of the ...
... Equinoxes . The Sun rises in one of these points on the 21st of March ; this point is called the Vernal Equinox . It sets in the opposite point on the 23d of September ; this point is called the Autumnal Equinox . One half of the ...
Page 12
... equinoxes at Aries and Libra , and is thence called the Equi- noctial Colure ; the other passes through the solstitial points or the points of the Sun's greatest declination north and south , and is thence called the Solstitial Colure ...
... equinoxes at Aries and Libra , and is thence called the Equi- noctial Colure ; the other passes through the solstitial points or the points of the Sun's greatest declination north and south , and is thence called the Solstitial Colure ...
Page 17
... equinox at the first point of Aries , not only because it is the meridian from which the distances of all the heavenly bodies are measured ; but especially because the student will thus be enabled to observe and compare the progressive ...
... equinox at the first point of Aries , not only because it is the meridian from which the distances of all the heavenly bodies are measured ; but especially because the student will thus be enabled to observe and compare the progressive ...
Page 19
... R. A. given , and loca- tion of stars on the maps ? How is R. A. given in locating objects ? Why ? How are hours marked on the maps ? The minutes ? 84. In consequence of the perpetual recession of the equinoxes ANDROMEDA . 19.
... R. A. given , and loca- tion of stars on the maps ? How is R. A. given in locating objects ? Why ? How are hours marked on the maps ? The minutes ? 84. In consequence of the perpetual recession of the equinoxes ANDROMEDA . 19.
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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