Celestial Objects for Common TelescopesLongmans, Green, 1873 - 343 páginas |
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Página 2
... smaller instruments of course will do less , especially with faint objects , but are often very perfect and distinct : and even diminutive glasses , if good , are not to be despised ; they will shew something never seen without them . I ...
... smaller instruments of course will do less , especially with faint objects , but are often very perfect and distinct : and even diminutive glasses , if good , are not to be despised ; they will shew something never seen without them . I ...
Página 8
... smaller speculum which stands in the mouth of a reflector is rightly centered , take out the eye - piece , and look at the small spe- culum ; in it will be seen an image of the large mirror , with the small speculum reflected again upon ...
... smaller speculum which stands in the mouth of a reflector is rightly centered , take out the eye - piece , and look at the small spe- culum ; in it will be seen an image of the large mirror , with the small speculum reflected again upon ...
Página 24
... smaller size , which he termed the ' nucleus , ' and the presence of which , he believed , might point out an important difference in the origin of the spots . Secchi , who concurs in this discovery , finds that holes in a glazed ...
... smaller size , which he termed the ' nucleus , ' and the presence of which , he believed , might point out an important difference in the origin of the spots . Secchi , who concurs in this discovery , finds that holes in a glazed ...
Página 32
... smaller and more isolated ones very persistent . So Herschel II . , Outlines of Astronomy , § 390. But in the next paragraph they stand as July 12 and Dec. 11 . motion , which is now an established fact . Fritsch 32 THE SOLAR SYSTEM .
... smaller and more isolated ones very persistent . So Herschel II . , Outlines of Astronomy , § 390. But in the next paragraph they stand as July 12 and Dec. 11 . motion , which is now an established fact . Fritsch 32 THE SOLAR SYSTEM .
Página 33
... smaller amount ; the neutral line , as to both these drifts , lying in about 15 ° of latitude . * With these shifting landmarks , it is not surprising that the Sun's period of rotation is still doubt- ful . Laugier's value , 25d 8h 10m ...
... smaller amount ; the neutral line , as to both these drifts , lying in about 15 ° of latitude . * With these shifting landmarks , it is not surprising that the Sun's period of rotation is still doubt- ful . Laugier's value , 25d 8h 10m ...
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Términos y frases comunes
achr achromatic aperture Aquil astronomers atmosphere beautiful Binary bluish Boöt bright brighter brilliant Buffham Cassini centre Ceph Clusters colour comet constellation craters curious dark Dawes deep diameter disc Double Stars Drac dusky Earth eye-piece faint field flushed white globe greenish grey Herc Herschel Huggins interior Jupiter larger Lassell libration light lilac limb luminous lunar minute stars Moon motion naked eye nearly nebulæ noticed nucleus object object-glass observers orange pair pale blue pale white pale yellow photosphere Pisc planet proper motion Red Star reflector region remarkable Right Ascension ring ruddy satellites Schm Schr Schröter Schwabe Secchi seen shadow shew side silvery white smaller smalt solar sometimes spec spots streaks surface Taur telescope topaz Triple Virg visible xIxh xvih XVIII yellowish
Pasajes populares
Página 345 - A NEW STAR ATLAS, for the Library, the School, and the Observatory, in Twelve Circular Maps (with Two Index Plates). Intended as a Companion to ' Webb's Celestial Objects for Common Telescopes.
Página 46 - Fairest of stars, last in the train of night, If better thou belong not to the dawn, Sure pledge of day, that crown'st the smiling morn With thy bright circlet, praise Him in thy sphere, While day arises, that sweet hour of prime.
Página 182 - Lift up your eyes on high, and behold who hath created these things, that bringeth out their host by number; he calleth them all by names by the greatness of his might, for that he is strong in power; not one faileth.
Página 345 - Why didn't somebody teach me the constellations, too, and make me at home in the starry heavens which are always overhead, and which I don't half know to this day?
Página 30 - I have said, he spent to satisfy himself; six more years to satisfy, and still thirteen more to convince, mankind. For thirty years never has the Sun exhibited his disc above the horizon of Dessau without being confronted by Schwabe's imperturbable telescope, and that appears to have happened, on an average, about 300 days a year.
Página 65 - Webb makes the following remarks on the rills:—"These most singular furrows pass chiefly through levels, intersect craters (proving a more recent date), reappear beyond obstructing mountains, as though carried through by a tunnel, and commence and terminate with little reference to any conspicuous feature of the neighbourhood.