The Geography of the Heavens and Class-book of Astronomy: Accompanied by a Celestial Atlas |
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Page 5
... directions by which it may be found ; and references to telescopic views of the same in the new maps . The color and relative magnitude of the components of the double stars , are also given . These Telescopic Objects , compiled with ...
... directions by which it may be found ; and references to telescopic views of the same in the new maps . The color and relative magnitude of the components of the double stars , are also given . These Telescopic Objects , compiled with ...
Page 13
... direction , extend entirely round the circle , or 360 ° . It is easy to convert right ascension into time , or time into right ascension , for if a heavenly body is one hour in passing over 15 ° , it will be one fifteenth of an hour ...
... direction , extend entirely round the circle , or 360 ° . It is easy to convert right ascension into time , or time into right ascension , for if a heavenly body is one hour in passing over 15 ° , it will be one fifteenth of an hour ...
Page 22
... direction from another is given , the latter is always understood to be on the meridian . After a little experience with the maps , even though unaccompanied by directions , the ingenious youth will be able , of himself , to devise a ...
... direction from another is given , the latter is always understood to be on the meridian . After a little experience with the maps , even though unaccompanied by directions , the ingenious youth will be able , of himself , to devise a ...
Page 26
... direction of one star from another , as given in this treatise , are strictly applicable only when the former one is on , or near the meridian . The bearings given , in many cases , are not the least approxima- tions to what appears to ...
... direction of one star from another , as given in this treatise , are strictly applicable only when the former one is on , or near the meridian . The bearings given , in many cases , are not the least approxima- tions to what appears to ...
Page 33
... direction from the Fly . It makes an equilateral triangle with Arietis and the Pleiades , being distant from each about 23 ° S. , and may otherwise be known by a star of the 3d magnitude in the mouth , 3 ° W. of it , called Gamma ...
... direction from the Fly . It makes an equilateral triangle with Arietis and the Pleiades , being distant from each about 23 ° S. , and may otherwise be known by a star of the 3d magnitude in the mouth , 3 ° W. of it , called Gamma ...
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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