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 93
... plates without interferometer , ( b ) mean of two plates with a 5 mm . separator between the interferometer plates , and ( c ) mean of three plates with a 10 mm . separator . For 58 observations on the 6 lines , the sum of the residuals ...
... plates without interferometer , ( b ) mean of two plates with a 5 mm . separator between the interferometer plates , and ( c ) mean of three plates with a 10 mm . separator . For 58 observations on the 6 lines , the sum of the residuals ...
Page 114
... plates - 700 with the astrographic telescope and 500 with the McClean telescope . It seemed worth while to attempt some control over the possible effects which might be introduced by colour differences between Eros and the comparison ...
... plates - 700 with the astrographic telescope and 500 with the McClean telescope . It seemed worth while to attempt some control over the possible effects which might be introduced by colour differences between Eros and the comparison ...
Page 154
... plates taken in Mr. Evershed's solar spectrograph . Plates were cut in half : one half was exposed at Ewhurst , and the two halves sent together , undeveloped , to Cambridge , where the unexposed half was standardised and the two ...
... plates taken in Mr. Evershed's solar spectrograph . Plates were cut in half : one half was exposed at Ewhurst , and the two halves sent together , undeveloped , to Cambridge , where the unexposed half was standardised and the two ...
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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