Monthly Notices of the Royal Astronomical SocietyPriestly and Weale, 1858 |
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Page 13
... surface is a well - defined dark spot , about the same size as the nucleus , situated a little to its left , in the direction of the comet's diurnal motion . - [ W. C. ] The centre of curvature of the southern edge of the comet's tail ...
... surface is a well - defined dark spot , about the same size as the nucleus , situated a little to its left , in the direction of the comet's diurnal motion . - [ W. C. ] The centre of curvature of the southern edge of the comet's tail ...
Page 37
... surface of the moon is perfect ; and parts which are as plane surfaces in the single photograph in the stereoscope present the most remark- able undulations and irregularities . By desire of Mr. De La Rue , the instrument is now on view ...
... surface of the moon is perfect ; and parts which are as plane surfaces in the single photograph in the stereoscope present the most remark- able undulations and irregularities . By desire of Mr. De La Rue , the instrument is now on view ...
Page 49
... surfaces given to the mirrors of the 20 - foot telescope are as perfect both in point of curve and regularity as those of the 9 - foot telescope , and only require an atmosphere proportionately fine to establish their proportionate ...
... surfaces given to the mirrors of the 20 - foot telescope are as perfect both in point of curve and regularity as those of the 9 - foot telescope , and only require an atmosphere proportionately fine to establish their proportionate ...
Page 55
... surface with a little cotton pad covered with the finest glove - leather . In a few minutes a high polish is obtained , quite without scratches . I have determined the reflecting powers of these mirrors by carefully measuring their ...
... surface with a little cotton pad covered with the finest glove - leather . In a few minutes a high polish is obtained , quite without scratches . I have determined the reflecting powers of these mirrors by carefully measuring their ...
Page 58
... surface of the mirror should have suffered , it is a light matter to have it silvered again , the objection hitherto brought against catoptrical in- struments on the score of their want of durability appears also to be overcome ...
... surface of the mirror should have suffered , it is a light matter to have it silvered again , the objection hitherto brought against catoptrical in- struments on the score of their want of durability appears also to be overcome ...
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Common terms and phrases
Adams Admiral Smyth angle Apparent R.A. Apparent appearance April Arcturus Astronomer Royal axis bright calculated Captain Carrington Catalogue centre coefficient comparison computed correction crater dark determined diameter direction disk distance ditto Donati's Comet eclipse edge elements envelope ephemeris epoch equations equatoreal error exhibited Geminus Greenwich instrument Jupiter l'équation l'on latitude length light longitude luminous lunar Lune magnitude Mean Solar measures Memoirs meridian Minor Planets mirror Monthly Notices moon moon's limb Nautical Almanac nearly Norman Pogson nucleus object-glass observations obtained occultation October orbit paper perihelion phenomena polar position present Prof Professor proper motions R.A. Apparent N.P.D. rays réfractions remarkable right ascensions ring Royal Observatory Saturn séculaire seen Sept Sheepshanks side Society solar spots standard stars sun's surface T. W. Webb tail telescope theory tion Variable Star visible volume