The Geography of the Heavens and Class-book of Astronomy: Accompanied by a Celestial Atlas |
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Page 10
... naked eye . The next ten classes are seen only through télescopes . In order to be able to designate with precision their situa- tions , imaginary circles have been considered as drawn in the heavens , most of which correspond to , and ...
... naked eye . The next ten classes are seen only through télescopes . In order to be able to designate with precision their situa- tions , imaginary circles have been considered as drawn in the heavens , most of which correspond to , and ...
Page 16
... naked eye , but by the aid of telescopes are found to consist of two or more stars . Binary stars are double stars revolving around each other , often called Binary Systems . Variable stars are those that are found to undergo certain ...
... naked eye , but by the aid of telescopes are found to consist of two or more stars . Binary stars are double stars revolving around each other , often called Binary Systems . Variable stars are those that are found to undergo certain ...
Page 19
... naked eye , as well as the principal objects of interest that are strictly telescopic . In describing the location of these objects , R. A. will denote Right Ascen- sion ; and Dec. , Declination . The initials N. and S. will indicate ...
... naked eye , as well as the principal objects of interest that are strictly telescopic . In describing the location of these objects , R. A. will denote Right Ascen- sion ; and Dec. , Declination . The initials N. and S. will indicate ...
Page 20
... naked eye . It resembles two cones of light , joined at their base , about 3 ° in length , and 4 ° in breadth . It was known as far back as A.D. 905 , is of an oval shape , and is described by Smyth as " an overpowering nebula , with a ...
... naked eye . It resembles two cones of light , joined at their base , about 3 ° in length , and 4 ° in breadth . It was known as far back as A.D. 905 , is of an oval shape , and is described by Smyth as " an overpowering nebula , with a ...
Page 23
... naked eye ; of which four are of the 3d magnitude , and so situated as to form , with one or two smaller ones , the figure of an inverted chair . " Wide her stars Dispersed , nor shine with mutual aid improved ; Nor dazzle , brilliant ...
... naked eye ; of which four are of the 3d magnitude , and so situated as to form , with one or two smaller ones , the figure of an inverted chair . " Wide her stars Dispersed , nor shine with mutual aid improved ; Nor dazzle , brilliant ...
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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