The Geography of the Heavens and Class-book of Astronomy: Accompanied by a Celestial Atlas |
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Page 9
... positions of the heavenly bodies , so that we can identify , and distinguish them from each other . In this manner they were observed and studied ages before books were written , and it was only after many careful and repeated ...
... positions of the heavenly bodies , so that we can identify , and distinguish them from each other . In this manner they were observed and studied ages before books were written , and it was only after many careful and repeated ...
Page 12
... position of the tropics must make a correspondent change . 14. The Colures are two great circles which pass through the poles of the heavens , dividing the ecliptic into four equal parts , and mark the seasons of the year . One of them ...
... position of the tropics must make a correspondent change . 14. The Colures are two great circles which pass through the poles of the heavens , dividing the ecliptic into four equal parts , and mark the seasons of the year . One of them ...
Page 13
... positions on the Earth , the equator and some fixed meridian , as that of Greenwich , contain the primary starting points ; in the hea- vens these points are in the ecliptic , the equinoctial , and that great meridian which passes ...
... positions on the Earth , the equator and some fixed meridian , as that of Greenwich , contain the primary starting points ; in the hea- vens these points are in the ecliptic , the equinoctial , and that great meridian which passes ...
Page 17
... position is apparently the same every hour of the night throughout the year , while the other stars are continually moving . Many of the stars also in that region of the skies never set , so that when the sky is clear , they may be seen ...
... position is apparently the same every hour of the night throughout the year , while the other stars are continually moving . Many of the stars also in that region of the skies never set , so that when the sky is clear , they may be seen ...
Page 19
... position of Alpheratz well fixed in the mind , because it is but one minute west of the great equinoctial colure , or first meridian of the heavens , and forms nearly a right line with Algenib , in the wing of Pegasus , 14 ° S. of it ...
... position of Alpheratz well fixed in the mind , because it is but one minute west of the great equinoctial colure , or first meridian of the heavens , and forms nearly a right line with Algenib , in the wing of Pegasus , 14 ° S. of it ...
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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