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Page 80
... His Majesty's Astronomer at the Cape of Good Hope , His Majesty's Astronomer for Scotland , and His Majesty's Astronomer for Ireland are not called Astronomers Royal . useful form ; and in the case of the sun 80 OBSERVATION.
... His Majesty's Astronomer at the Cape of Good Hope , His Majesty's Astronomer for Scotland , and His Majesty's Astronomer for Ireland are not called Astronomers Royal . useful form ; and in the case of the sun 80 OBSERVATION.
Page 84
... Cape of Good Hope ) , and especially in his great researches on Solar and on Stellar parallax , it has been recognised as an instrument of the very highest accuracy , measuring the distance between stars correctly to less than a tenth ...
... Cape of Good Hope ) , and especially in his great researches on Solar and on Stellar parallax , it has been recognised as an instrument of the very highest accuracy , measuring the distance between stars correctly to less than a tenth ...
Page 85
... Cape , he observed the minor planets Iris , Victoria , and Sappho , and secured the co - opera- tion of four other heliometers . His final result was 92,870,000 miles , the parallax being 8 " , 802 ( Cape Obs . , Vol . VI . ) . So ...
... Cape , he observed the minor planets Iris , Victoria , and Sappho , and secured the co - opera- tion of four other heliometers . His final result was 92,870,000 miles , the parallax being 8 " , 802 ( Cape Obs . , Vol . VI . ) . So ...
Page 86
... Cape Observatory , vol . x . , part 3 . 2 The parallax of the sun is the angle subtended by the earth's radius at the sun's distance . 3 A. R. Hinks , R.A.S .; Monthly Notices , June , 1909 . 4 In the Encyclopædia Britannica , article ...
... Cape Observatory , vol . x . , part 3 . 2 The parallax of the sun is the angle subtended by the earth's radius at the sun's distance . 3 A. R. Hinks , R.A.S .; Monthly Notices , June , 1909 . 4 In the Encyclopædia Britannica , article ...
Page 89
... Cape of Good Hope we find Mr. Frank McClean's 24 - inch refractor , with an object - glass prism for spectroscopic work . It would be out of place to describe here the practical adjuncts of a modern equatoreal - the adjustments for ...
... Cape of Good Hope we find Mr. Frank McClean's 24 - inch refractor , with an object - glass prism for spectroscopic work . It would be out of place to describe here the practical adjuncts of a modern equatoreal - the adjustments for ...
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accurate observations Airy astro Astronomer Royal Astronomia Nova astronomical units attraction axis bright calculations Cape Cassini catalogue centre century comet compute Copernicus diameter discovered discovery earth eclipse epicycles equatoreal error excentric explain fact fixed stars Galileo Greenwich Halley heavenly bodies heavens heliometer Hipparchus Huggins hydrogen hypothesis instruments Johann Kepler John Herschel Jupiter Jupiter's Kepler Laplace Lick Observatory light line of apses line of sight lunar Mars mathematical mean distance mean motion measured Mercury meteor method miles a second moon moon's nebulæ Newton Observatory orbit parallax perihelion period photographic physical planet planetary pole position predicted proper motion proved Ptolemy R. S. Phil records refractor retrograde retrograde motion revolution revolve round ring rotation round the sun satellites seems showed Sirius solar system spectra spectroscope spectrum spots stellar sun-spots sun's surface supposed tables telescope theory tion Trans Tycho Brahe Uranus velocity Venus Verrier zenith