The Geography of the Heavens and Class-book of Astronomy: Accompanied by a Celestial Atlas |
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Page 29
... minutes after Shera- tan , on the 5th December , near where the sun does in midsum- mer . Arietis , also , is nearly on the same meridian with Almaack , in the foot of Andromeda , 19 ° N. of it , and culminates only four minutes after ...
... minutes after Shera- tan , on the 5th December , near where the sun does in midsum- mer . Arietis , also , is nearly on the same meridian with Almaack , in the foot of Andromeda , 19 ° N. of it , and culminates only four minutes after ...
Page 33
... minutes ; while Hevelius assures us that it once disappeared for 4 years ; so that its true period , perhaps , has not been satisfactorily deter- mined . The whole number of stars ascertained to be variable amounts to only 15 ; while ...
... minutes ; while Hevelius assures us that it once disappeared for 4 years ; so that its true period , perhaps , has not been satisfactorily deter- mined . The whole number of stars ascertained to be variable amounts to only 15 ; while ...
Page 35
... minutes , and 56 seconds . Dr. Herschel attributes the variable appearance of Algol to spots upon its surface , and thinks it has a motion on its axis similar to that of the sun . He also observes , of variable stars generally : - " The ...
... minutes , and 56 seconds . Dr. Herschel attributes the variable appearance of Algol to spots upon its surface , and thinks it has a motion on its axis similar to that of the sun . He also observes , of variable stars generally : - " The ...
Page 36
... minutes after Algol , at which time the latter is almost directly overhead . When these two stars are on the meridian , that beautiful cluster , the Pleiades , is about half an hour E. of it ; and in short , the most brilliant portion ...
... minutes after Algol , at which time the latter is almost directly overhead . When these two stars are on the meridian , that beautiful cluster , the Pleiades , is about half an hour E. of it ; and in short , the most brilliant portion ...
Page 39
... minutes before 9 o'clock , on the even- ing of the 1st of January , and may serve in place of the sun , to indicate the time , and as a guide to the surrounding stars . According to Hesiod , who wrote about 900 years before the birth of ...
... minutes before 9 o'clock , on the even- ing of the 1st of January , and may serve in place of the sun , to indicate the time , and as a guide to the surrounding stars . According to Hesiod , who wrote about 900 years before the birth of ...
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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