Popular Astronomy, Volume 50Goodsell Observatory of Carleton College, 1942 |
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Page 118
... parallax , that the earth must be moving in an orbit , and Galileo went so far as to advocate a method of measuring the effect of this orbital motion . With his little telescope he had discovered many double stars . Some of these ...
... parallax , that the earth must be moving in an orbit , and Galileo went so far as to advocate a method of measuring the effect of this orbital motion . With his little telescope he had discovered many double stars . Some of these ...
Page 119
... parallax results . At about the same time , Bessel , in Königsberg , using a six - inch heliometer , found a parallax of 0 " .31 for 61 Cygni ; Struve in Dorpat with a filar micrometer on an eight - inch refractor obtained a parallax of ...
... parallax results . At about the same time , Bessel , in Königsberg , using a six - inch heliometer , found a parallax of 0 " .31 for 61 Cygni ; Struve in Dorpat with a filar micrometer on an eight - inch refractor obtained a parallax of ...
Page 121
... parallax star is located near the center of the plate and an ex- posure of from a few seconds to a few minutes will generally be suf- ficient to yield ... parallax will give the absolute parallax , that is the Frederick Slocum 121.
... parallax star is located near the center of the plate and an ex- posure of from a few seconds to a few minutes will generally be suf- ficient to yield ... parallax will give the absolute parallax , that is the Frederick Slocum 121.
Contents
Bolide observed A bright 451 | 114 |
STELLAR DISTANCES FREDERICK SLOCUM | 117 |
METEORITIC FOSSILS BEN HUR WILSON | 125 |
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absolute magnitude American American Astronomical Society American Meteor Society angle appeared Astronomical Society atmosphere average azimuth changes College comets constellation craters Cygni diameter direction distance earth eclipse end point ephemeris errors fireball galactic galaxies given height horizon indicated instruments July June Jupiter latitude Lick Observatory light curve longitude luminosity lunar Mare Imbrium Mars maxima maximum mean measured meridian meteor meteorite method miles minimum moon motion nebulae Notes novae object observations Observatory obtained OCCULTATIONS Ohio orbit paper parallax path perihelion phenomena photographs planet POPULAR ASTRONOMY position predicted present probably problem projectile radiation region reports rotation seen solar spectra spectral type spectrum SS Cygni stellar sunspot surface Table telescope tion train University Variable Star variation velocity Venus visible Yerkes Observatory zenith Zodiacal Light