Fourteen Weeks in Descriptive Astronomy |
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Page 18
... celestial phenomena by natural causes . For his audacity and impiety , as his countryman considered it , he and his family were doomed to perpetual banish- ment . Pythagoras founded the second celebrated astro- nomical school , at ...
... celestial phenomena by natural causes . For his audacity and impiety , as his countryman considered it , he and his family were doomed to perpetual banish- ment . Pythagoras founded the second celebrated astro- nomical school , at ...
Page 35
... CELESTIAL SPHERE . The blue arch of the sky , as it appears to be spread above us , is termed the Celestial Sphere . There are two points to be no- ticed here . First , that so far distant is this imagi- nary arch from us , that if any ...
... CELESTIAL SPHERE . The blue arch of the sky , as it appears to be spread above us , is termed the Celestial Sphere . There are two points to be no- ticed here . First , that so far distant is this imagi- nary arch from us , that if any ...
Page 36
... celestial sphere there are imag- ined to be drawn three systems of circles : the HORI- ZON , the EQUINOCTIAL , and the ECLIPTIC Systems . Each of these has ( 1 ) its Principal Circle , ( 2 ) its Subordinate Circles , ( 3 ) its Points ...
... celestial sphere there are imag- ined to be drawn three systems of circles : the HORI- ZON , the EQUINOCTIAL , and the ECLIPTIC Systems . Each of these has ( 1 ) its Principal Circle , ( 2 ) its Subordinate Circles , ( 3 ) its Points ...
Page 37
... celestial sphere . The N. , S. , E. , and W. points are familiar to all . ( d ) MEASUREMENTS . - These are Azimuth , Ampli- tude , Altitude , and Zenith distance . Azimuth is the distance from the meridian , meas- ured East or West , on ...
... celestial sphere . The N. , S. , E. , and W. points are familiar to all . ( d ) MEASUREMENTS . - These are Azimuth , Ampli- tude , Altitude , and Zenith distance . Azimuth is the distance from the meridian , meas- ured East or West , on ...
Page 38
... Celestial Equator , or the earth's equator , ex- tended to the Celestial Sphere . ( b ) SUBORDINATE CIRCLES . - These are the Hour Circles ( Right Ascension Meridians ) and the Decli- nation Parallels . The Hour Circles are thus lo ...
... Celestial Equator , or the earth's equator , ex- tended to the Celestial Sphere . ( b ) SUBORDINATE CIRCLES . - These are the Hour Circles ( Right Ascension Meridians ) and the Decli- nation Parallels . The Hour Circles are thus lo ...
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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