The Geography of the Heavens and Class-book of Astronomy: Accompanied by a Celestial Atlas |
From inside the book
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Page 11
... 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 Ecliptic 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 Ecliptic makes the same angle with the axis of the heavens ; so that ...
Page 12
... side of the ecliptic . It includes , also , the orbits of all the planets , except some of the asteroids , since they are never seen beyond 8 ° either north or south of the ecliptic . 12. Parallels of Latitude are small circles imagined ...
... side of the ecliptic . It includes , also , the orbits of all the planets , except some of the asteroids , since they are never seen beyond 8 ° either north or south of the ecliptic . 12. Parallels of Latitude are small circles imagined ...
Page 14
... 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 15
... 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 uppermost . The ...
... 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 uppermost . The ...
Page 19
... side of it ; or , by its constituting , with two others , a very small triangle , S. of it . Nearly in a line with Almaack , Merach and Delta , but curv- ing a little to the N. 7 ° farther , is a lone star of the 2d magni- tude , in the ...
... side of it ; or , by its constituting , with two others , a very small triangle , S. of it . Nearly in a line with Almaack , Merach and Delta , but curv- ing a little to the N. 7 ° farther , is a lone star of the 2d magni- tude , in the ...
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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