Popular Astronomy, Volume 57Goodsell Observatory of Carleton College, 1949 |
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Page 265
... heliometer ) . But before discussing these three parallaxes let us first examine a few promising investigations that immedidately preceded these results . The Dawn of Parallaxes . During the early years of the nineteenth century ...
... heliometer ) . But before discussing these three parallaxes let us first examine a few promising investigations that immedidately preceded these results . The Dawn of Parallaxes . During the early years of the nineteenth century ...
Page 268
... Heliometer and Bessel's Success . Bessel's renowned first paral- * The hypothetical parallax is π = a / T M1 / 3 ... heliometers : Seeliger . " Theorie des Heliometers , " Leipzig , 1877 ; L. Ambronn , " Handbuch der Astronomischen ...
... Heliometer and Bessel's Success . Bessel's renowned first paral- * The hypothetical parallax is π = a / T M1 / 3 ... heliometers : Seeliger . " Theorie des Heliometers , " Leipzig , 1877 ; L. Ambronn , " Handbuch der Astronomischen ...
Page 269
... heliometer , an instrument invented for the purpose of determining the solar parallax . The lens , like Struve's famous ob- jective , was constructed by Fraunhofer , although Fraunhofer himself did not live to see the actual completion ...
... heliometer , an instrument invented for the purpose of determining the solar parallax . The lens , like Struve's famous ob- jective , was constructed by Fraunhofer , although Fraunhofer himself did not live to see the actual completion ...
Contents
INDEX TO ILLUSTRATIONS | 48 |
Astrolabes Photographs of 159 160 | 159 |
e Orbit of 464 | 178 |
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American angle appear asteroid astrolabe Astronomical Society atmosphere atomic average bright brighter California Cepheids cloud color comets crater curves determined diameter distance earth eclipse enstatite Ephemeris fireball galactic galaxy globular clusters Harvard Harvard College Observatory heliometer indicated instrument interest July June Jupiter latitude Lick Observatory light lunar magnitude Mars mass maximum mean measured meridian Messier meteor meteorites Meteoritical Society method miles Milky mirror month moon motion nebulae Notes novae object observations Observatory OCCULTATIONS VISIBLE October Open cluster optical orbit origin Palomar Palomar Observatories paper parallax particles period photographic planetary planetary nebulae planets plates POPULAR ASTRONOMY present probably published radiation radio relative rocket rotation Russell Santa Rosa Saturn scientific solar system space spectra spectrum stellar Struve Sunspot Table telescope temperature theory tion University Uranus Variable Star velocity Venus Yerkes Observatory