The Geography of the Heavens and Class-book of Astronomy: Accompanied by a Celestial Atlas |
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Page 10
... called stars of the first magnitude , the next brightest , stars of the second magnitude , and so on to the sixth class , which consists of the smallest stars visible to the naked eye . The next ten classes are seen only through ...
... called stars of the first magnitude , the next brightest , stars of the second magnitude , and so on to the sixth class , which consists of the smallest stars visible to the naked eye . The next ten classes are seen only through ...
Page 11
... called the Nadir . Vertical Circles are circles drawn through the Zenith and Nadir of any place , cutting the ... called the Equinoxes . The Sun rises in one of these points on the 21st of March ; this point is called the Vernal ...
... called the Nadir . Vertical Circles are circles drawn through the Zenith and Nadir of any place , cutting the ... called the Equinoxes . The Sun rises in one of these points on the 21st of March ; this point is called the Vernal ...
Page 12
... called the Summer Solstice ; and that point in the ecliptic which touches the tropic of Capricorn , is called the Winter Solstice . The distance of these two points from the equinoctial , is always equal to the obliquity of the ecliptic ...
... called the Summer Solstice ; and that point in the ecliptic which touches the tropic of Capricorn , is called the Winter Solstice . The distance of these two points from the equinoctial , is always equal to the obliquity of the ecliptic ...
Page 13
... 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 the equinoctial at right angles . Every place on the Earth , and ...
... 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 the equinoctial at right angles . Every place on the Earth , and ...
Page 14
... 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 top and bottom of the first four maps , and in ...
... 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 top and bottom of the first four maps , and in ...
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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 celestial Cepheus circle cluster comet constellation Cor Caroli declination degree Delta Denebola diameter distant companion diurnal motion DOUBLE STAR Earth Earth's orbit east ecliptic equator equinoctial figure fixed stars Gamma head heavens hemisphere Herschel horizon Jupiter latitude Libra 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 tides tion triangle TRIPLE STAR Ursa Ursa Major Venus vernal equinox visible Zeta Zodiac