Fourteen Weeks in Descriptive Astronomy |
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Page 38
... to the Celes- tial Sphere . ( See Colures , p . 40. ) The Declination Parallels are small circles par- allel to the Equinoctial ; or they may be conceived as the parallels of terrestrial latitude extended to the Celestial 38 INTRODUCTION .
... to the Celes- tial Sphere . ( See Colures , p . 40. ) The Declination Parallels are small circles par- allel to the Equinoctial ; or they may be conceived as the parallels of terrestrial latitude extended to the Celestial 38 INTRODUCTION .
Page 39
Joel Dorman Steele. as the parallels of terrestrial latitude extended to the Celestial Sphere . ( c ) The POINTS are ... latitude . Polar distance ( the complement of Declination ) is the distance from the Pole , measured on a vertical ...
Joel Dorman Steele. as the parallels of terrestrial latitude extended to the Celestial Sphere . ( c ) The POINTS are ... latitude . Polar distance ( the complement of Declination ) is the distance from the Pole , measured on a vertical ...
Page 40
... Latitude . The Circles of Celestial Longitude are now less employed . They are measured on the Ecliptic , as circles of Right Ascension ( R. A. ) are now measured on the Equinoctial . The Colures are two principal meridians ; the ...
... Latitude . The Circles of Celestial Longitude are now less employed . They are measured on the Ecliptic , as circles of Right Ascension ( R. A. ) are now measured on the Equinoctial . The Colures are two principal meridians ; the ...
Page 41
... latitude . Celestial longitude is distance from the Vernal Equi- nox measured on the ecliptic , eastward . Celestial latitude is distance from the ecliptic meas- ured on a Subordinate circle , north or south . THE ZODIAC . A belt of the ...
... latitude . Celestial longitude is distance from the Vernal Equi- nox measured on the ecliptic , eastward . Celestial latitude is distance from the ecliptic meas- ured on a Subordinate circle , north or south . THE ZODIAC . A belt of the ...
Page 52
... latitude , and still there came a great billow out of the souther board . " Number and location of spots . - Sometimes , but rarely , the disk is clear . During a period of ten years , observations were made on 1982 days , on 372 of ...
... latitude , and still there came a great billow out of the souther board . " Number and location of spots . - Sometimes , but rarely , the disk is clear . During a period of ten years , observations were made on 1982 days , on 372 of ...
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Common terms and phrases
ancients Andromeda angle aphelion appear Aries astronomers atmosphere axis Boötes bright brilliant Canis Minor Capricornus Cassiopeia cause Celestial Sphere centre Cepheus circle color comet conjunction constellation Cor Caroli dark density Describe diameter disk earth east ecliptic equal equator equinoctial figure fixed stars full moon globe heat heavenly bodies heavens Hercules Herschel horizon inclined inferior conjunction inferior planet Jupiter latitude length light luminous lunar Lyra magnitude Mars mean distance Mercury meridian meteors miles moon's motion move naked eye nearly nebula Neptune night node north pole Orion parallax pass path penumbra perihelion Perseus Pisces polar Polaris precession rays revolve ring rising Saturn seasons seen shine side sidereal sidereal day solar day solar system solstice space spots summer sun's surface synodic revolution tance Taurus telescope theory tion Uranus Ursa Major Ursa Minor varies velocity Venus vernal equinox visible winter Zodiac