Popular Astronomy, Volume 57Goodsell Observatory of Carleton College, 1949 |
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Page 11
... method will accordingly fail . The most accurate of the impersonal methods used in modern astro- photometry , the photoelectric method , has not yet played any rĂ´le in the photometry of double stars . In this case too the small ...
... method will accordingly fail . The most accurate of the impersonal methods used in modern astro- photometry , the photoelectric method , has not yet played any rĂ´le in the photometry of double stars . In this case too the small ...
Page 12
... method would be the construction of an objective grating with variable grating constant . 12 The method of photometry of equality has been used mainly at the Harvard ( loc . cit . ) and the Uppsala Observatories . 59,10,11 Observations ...
... method would be the construction of an objective grating with variable grating constant . 12 The method of photometry of equality has been used mainly at the Harvard ( loc . cit . ) and the Uppsala Observatories . 59,10,11 Observations ...
Page 419
... method , involving in addition a measuring engine or plate- measuring device , transforms the method from a qualitative method to a quantitative method of great accuracy and speed . The preliminary adjustment of a photographic telescope ...
... method , involving in addition a measuring engine or plate- measuring device , transforms the method from a qualitative method to a quantitative method of great accuracy and speed . The preliminary adjustment of a photographic telescope ...
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