Celestial Objects for Common TelescopesLongmans, Green, 1873 - 343 páginas |
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... deep obligation . In re- ferring especially to the names of Dawes , * Knott , Birt , and Baxendell , he feels that he is not only discharging a debt of gratitude , but acquiring for his little treatise a sanction , the value of which ...
... deep obligation . In re- ferring especially to the names of Dawes , * Knott , Birt , and Baxendell , he feels that he is not only discharging a debt of gratitude , but acquiring for his little treatise a sanction , the value of which ...
Página 19
... deep yellow , probably to save the brightest and most central rays of the spectrum . Herschel I. adopted , with great success , a trough containing a filtered mixture of ink and water . Cooper , at Markree Castle , Ireland , used a ...
... deep yellow , probably to save the brightest and most central rays of the spectrum . Herschel I. adopted , with great success , a trough containing a filtered mixture of ink and water . Cooper , at Markree Castle , Ireland , used a ...
Página 20
... deep bluish grey , or neutral tint , will be quite satisfactory ; if several , it would be worth while to have . different colours , Secchi's observations at Rome seeming to show that the visibility of very delicate details may depend ...
... deep bluish grey , or neutral tint , will be quite satisfactory ; if several , it would be worth while to have . different colours , Secchi's observations at Rome seeming to show that the visibility of very delicate details may depend ...
Página 21
... deep screens , for sharper defini- tion . A small aperture has , however , one material advantage in preserving the screens from cracking . I have known a double screen demolished in a few seconds : partial fusion also , or blistering ...
... deep screens , for sharper defini- tion . A small aperture has , however , one material advantage in preserving the screens from cracking . I have known a double screen demolished in a few seconds : partial fusion also , or blistering ...
Página 62
... deep . On the floor are 12 or 13 small red or yellow cones . The highest summits in the view are the two snowy volcanos of Hawaii , seen over the clouds in a very faint distance : our sketch gives only the general effect . wonder at ...
... deep . On the floor are 12 or 13 small red or yellow cones . The highest summits in the view are the two snowy volcanos of Hawaii , seen over the clouds in a very faint distance : our sketch gives only the general effect . wonder at ...
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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.