The Geography of the Heavens, and Class Book of Astronomy: Accompanied by a Celestial Atlas |
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Page 27
... situated with respect to the equinoctial ? What is the obliquity of the ecliptic ? Describe the manner in which this angle varies . De- scribe the division of the ecliptic into signs . How much , at a mean rate , does the Sun advance in ...
... situated with respect to the equinoctial ? What is the obliquity of the ecliptic ? Describe the manner in which this angle varies . De- scribe the division of the ecliptic into signs . How much , at a mean rate , does the Sun advance in ...
Page 32
... situated in this meridian near the 33d degree of north declination , while in New England it should be those which are situated in it near the 42d degree . How , in using the circumpolar maps ? Describe the construction and use of the ...
... situated in this meridian near the 33d degree of north declination , while in New England it should be those which are situated in it near the 42d degree . How , in using the circumpolar maps ? Describe the construction and use of the ...
Page 35
... situated between 20 ° and 50 ° of N. declination . Its mean right ascension is nearly 15 ° ; or one hour E. of the equinoctial colure . It consists of 66 visible stars , of which three are of the 20 magnitude , and two of the 3d ; most ...
... situated between 20 ° and 50 ° of N. declination . Its mean right ascension is nearly 15 ° ; or one hour E. of the equinoctial colure . It consists of 66 visible stars , of which three are of the 20 magnitude , and two of the 3d ; most ...
Page 37
... situated in the node , or flexure of the riband . This is the principal star in the constellation , and is situated 20 N. of the equinoctial , and 53 minutes east of the meridian . Seven degrees S. E. of El Rischa , passing by three or ...
... situated in the node , or flexure of the riband . This is the principal star in the constellation , and is situated 20 N. of the equinoctial , and 53 minutes east of the meridian . Seven degrees S. E. of El Rischa , passing by three or ...
Page 38
... situated 26 ° N. of Andromeda , and midway between it and the North Polar Star . It may be What a ne boundar is of this constellation ? How is the constellation Cassiopeia ad 22 12 By whom is she surrounded ? How is this constellation ...
... situated 26 ° N. of Andromeda , and midway between it and the North Polar Star . It may be What a ne boundar is of this constellation ? How is the constellation Cassiopeia ad 22 12 By whom is she surrounded ? How is this constellation ...
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Common terms and phrases
3d magnitude 4th magnitude ancient angle appear Arcturus Argo Navis Aries astronomers Auriga axis Beta brightest called Cassiopeia celestial centre Cepheus circle cluster colure comet constellation Cor Caroli declination degree Denebola diameter direction distinguished diurnal motion Earth east ecliptic equal equator equinoctial figure fixed stars Gamma globe head heavenly bodies heavens Hercules Herschel horizon Jupiter latitude length Libra light longitude luminous Mars mean distance Mercury meridian millions of miles minutes Moon Moon's motion naked eye nearly nebulæ night node north pole northern hemisphere o'clock observed orbit Orion parallax passing perihelion period Perseus phenomena planets Pleiades polar star principal star represented revolution revolve right ascension rise satellites Saturn seasons seen side sidereal Sirius situated small stars solar system solstice southern spots square Sun's supposed surface Taurus telescope tion triangle Ursa Venus vernal equinox Virgo visible whole number Zeta Zodiac