The Observatory, Volum 17Editors of the Observatory, 1894 "A review of astronomy" (varies). |
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A. M. W. Downing Abney appear April axis bright British Astronomical Association Capt catalogue celestial centre comet correction crater dark Decl deduced determination diameter disk distance double stars drawings E. W. Maunder eclipse equation equatorial error fact give glass Greenwich heliometer instrument interesting Isaac Roberts July June Jupiter latitude Lick Observatory light limb lines longitude lunar magnitude Mars Maunder mean measures Meeting meridian meteor meteorological method Moon nebula night object object-glass observations obtained orbit paper parallax period photographs photometer planet plate polar position present President probably Prof proper motion referred reflector refractor remarkable right ascension Roberts Royal Astronomical Society Royal Observatory satellite Saturn seems seen Sept solar spectra spectrum spot stellar sun-spots Sun's taken telescope temperature tion transit Transit of Mercury Turner variable stars variation Venus visible
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Pàgina 365 - WEBB.— CELESTIAL OBJECTS FOR COMMON TELESCOPES. By the Rev. TW WEBB, MA, FRAS Fifth Edition, Revised and greatly Enlarged by the Rev. TE ESPIN, MA, FRAS (Two Volumes.) Vol.
Pàgina 217 - Cap. 9, it is enacted that whenever any expression of time occurs in any Act of Parliament,. Deed, or any other legal instrument, the time referred to shall, unless it is otherwise specifically stated, be held in the case of Great Britain to be Greenwich mean time, and in the case of Ireland, Dublin mean time.
Pàgina 184 - B . sin c = sin b . sin C cos a = cos b . cos c + sin b . sin c cos b = cos a . cos c + sin a . sin c cos A cos B cos c = cos a . cos b + sin a . sin b . cos C ..2), cotg b . sin c = cos G.
Pàgina 216 - Dublin time, or to the mean astronomical time in each locality, and section 1 enacts that, whenever any expression of time occurs in any Act of Parliament, deed, or other legal instrument, the time referred shall, unless it is otherwise specifically stated, be held in the case of Great Britain to be Greenwich mean time, and in the case of Ireland, Dublin mean time.
Pàgina 85 - Three new variables have been discovered this year by means of this property. The number of stars of the fifth type has been increased by 10, making the total number now known of these objects 55. The hydrogen line F has been discovered to be bright in the spectra of BD.
Pàgina 349 - That these lines were not produced by the portion of the Earth's atmosphere through which the light of Mars had passed was shown by the absence of similar lines in the spectrum of the Moon, which at the time of observation had a smaller altitude than Mars.
Pàgina 198 - The observations were 976 in number, and were made at the hours 9 AM and 9 PM The bell could be heard more frequently in the evening than in the morning, and on Sundays it was more frequently audible than on week-days. The direction of the wind most favourable for bearing ' Big Ben
Pàgina 397 - But in the day which follows, of twelve or ten months, the sun has time to melt all, or nearly all, of the snow of recent formation, reducing it to such a small area that it seems to us no more than a very white point.
Pàgina 246 - Jupiter, 126 of them will have their orbits changed into ellipses with periodic times less than one-half that of Jupiter ; 839 of them will have their orbits changed...
Pàgina 86 - ... instruments. The sheets are changed at intervals, thus giving a record of atmospheric conditions at a height hitherto unattempted. The use of beasts of burden at these heights offers an opportunity in the future of carrying instruments and conducting experiments at altitudes heretofore regarded as inaccessible for these purposes. The mountain as seen from every direction is an isolated sharp peak. It is therefore especially suited for the study of the upper atmosphere. THE BRUCE PHOTOGRAPHIC...