Monthly Notices of the Royal Astronomical Society, Volume 47; Volumes 1886-1887Priestley and Weale, 1887 - Astronomy Includes lists of additions to the Society's library, usually separately paged. |
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Common terms and phrases
9 mag Aldebaran angle appear Astronomer Astronomer Royal Auriga axis Birr Castle Brodie Camelopardalis Cape Cat Catalogue caustic Centauri centre Cephei circle clock coefficients colour Comet Comp computed corona corrected curve Cygni Definition Delaunay Delaunay's determination diameter diff distance double star eclipse elliptic Ephemeris equation equatorial Eridani error faint Fiery red formula G. F. C. Birm Greenwich Greenwich Mean Herschel inches instrument limb longitude lunar magnitude Majoris Mean measures meteors micrometer mirror Monthly Notices nebula nucleus obtained orbit Orionis Pale orange parabola parallax photographs plane plates position position-angle Prof proper motions Radcliffe Observatory radial velocity Reddish orange reflector refractor Remarks Right Ascension Royal Observatory Sagittarii satellite seen Society solar spectroscope spectrum Star-line stellar telescope tion true anomaly Tupman Ursa Minoris visible yellow Zone Δα ΙΟ
Popular passages
Page 250 - ... be the corresponding coordinates when the plane containing r and the axis is substituted for the principal plane. In this case the projection (on the plane...
Page 219 - GW Hill, On certain lunar inequalities due to the action of Jupiter, and discovered by Mr. E. Neison...
Page 428 - There were not sufficient observations of circumpolar stars by F in the period 1879-1881 to give a determination of his probable errors beyond 165° NPD, and the series for M does not rest on very large numbers of observations except for the zones 175-177 and 183-185. I shall therefore take P as the average observer, and any further conclusions will be based on the figures in the last column of Table I. It will be seen that the probable errors of a single wire by the different observers, though differing...
Page 24 - I have just named surrounded by nebulœ, but that the nebulosity extends in streamers and fleecy masses, till it seems almost to fill the spaces between the stars, and to extend far beyond them. It suggests the probability that these principal stars in the Pleiades, together with many of the stars around them, are involved either directly or else in sight alignment with one vast nebula. The negatives and the enlargements...
Page 303 - I am awaro, by a farmer and a fisherman at Blauwberg (near Cape Town), on Tuesday night, January 18; the next evening it was seen at Grahamstown, Fraserburg, &c. ; oar first view of it at the observatory was on January 22. It presented the appearance of a pale narrow ribbon of light, quite straight, and of nearly uniform brightness throughout its length. There was no head or condensation of any kind visible near the end, the light simply fading away to nothing. The comet was lost in the 6-inch Equatorial...
Page 19 - a certain fuzzy appearance surrounding the widened portions of the dark lines," is merely a special case of widening. The second results from increased general absorption in certain parts of the spectrum, while the third is "the appearance of real bands in the selective absorption due to a spot.'
Page 444 - ... attended with success. The final results of the investigation have been placed in my hands only during the writing of this Report. The first observation was obtained on May 26 of last year, and the last was effected on May 31 of the present year. The intermediate computations were systematically continued during the interval. They involved the reduction of no less than 30,000 bisections of star images, on 330 photographic plates, procured on 89 nights.
Page 448 - ... by a grant from the Government Grant Committee of the Royal Society, to whom my thanks are due.