The Observatory, Volume 56Editors of the Observatory, 1933 Some vols. for 1886- include a special issue: Annual companion to the Observatory. |
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Page 44
... method everything is derived by differential calculation from the two photographs . In the second method each plate has two star fields , one being a check field in another part of the sky . Here the equatorial camera is turned during ...
... method everything is derived by differential calculation from the two photographs . In the second method each plate has two star fields , one being a check field in another part of the sky . Here the equatorial camera is turned during ...
Page 106
... method consists of projecting an image of the plate , together with the cross wires in the focal plane of the ... method . The measures were compared , and the authors find that the probable error of measurement by the ordinary method ...
... method consists of projecting an image of the plate , together with the cross wires in the focal plane of the ... method . The measures were compared , and the authors find that the probable error of measurement by the ordinary method ...
Page 212
... method of determining the temperature of the central star of a planetary nebula is developed . This method rests on the same theoretical assumptions as Zanstra's , but it appears to have several practical advantages . It requires only ...
... method of determining the temperature of the central star of a planetary nebula is developed . This method rests on the same theoretical assumptions as Zanstra's , but it appears to have several practical advantages . It requires only ...
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Common terms and phrases
absorption appears astrographic Astronomer Royal atmosphere atom bands bright BRITISH ASTRONOMICAL ASSOCIATION calcium Cambridge Cape catalogue central intensities centre chromosphere clock colour comet comparison stars computed correction corresponding craters Crommelin curve Decl density determined discussion distance double stars Earth eclipse effect electrons emission ephemeris equation equatorial Eros frequency galaxies George Darwin give given Greaves Greenwich hydrogen instrument interest investigation ionisation Jupiter km./sec latitude layer light lines longitude magnetic magnitude mean measured meridian meteorite meteors method motion nebulæ observations Observatory obtained orbit oscillator paper period photographs planet planetary plates position possible present President probable error Prof Professor Quadrantids radial velocities radiation Right Ascension rotational speed Sir Arthur Eddington Sir Frank Dyson slide Solar Activity spectra spectrograph spectrum spot Steavenson stellar Sun's sunspot surface tables telescope temperature theory University variable variable stars variation wave-length zero