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Meeting of the Royal Astronomical Society on 1926 March 12 101
Meeting of the British Astronomical Association on 1926 February 27 llil
iLbetti G Height of the Chromo Comet Notes Dr A C D Crom
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absorption appear Astronomer Royal Astronomical Society atmosphere atoms bright bright bands Catalogue centre Cepheids chromosphere clock comet corrections Crommelin curve D.Sc Decl density determined diameter discussion distance double stars Earth eclipse Eddington effect electrons ephemeris equator equatorial error give given Greenwich hydrogen hydrogen lines indicated instrument interesting ionization June km./sec latitude light limb lines longitude magnetic magnitude mass maximum mean measures Meeting meridian meteorological meteors method Moon nebula Nova object observations Observatory obtained orbit paper parallaxes parsecs perihelion period Perseids photographs planets plates position possible President prime meridian Prof proper motions Quadrantids quantum number radial velocity radiation radiation pressure recent refractor region rotation seen slide solar spectra spectral type spectroscopic spectrum spots Steavenson stellar suggested sun-spot Sun's surface taken telescope temperature theory Turner variable variable stars variation wave-length