Celestial objects for common telescopesLongmans Green, 1873 |
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Page 36
... dusky or nearly black points , seldom circular , and often arranged in rows . In the faculæ and round the penumbræ , where the photosphere appears to be heaped up or rolled together , these interstices usually disappear , and the ...
... dusky or nearly black points , seldom circular , and often arranged in rows . In the faculæ and round the penumbræ , where the photosphere appears to be heaped up or rolled together , these interstices usually disappear , and the ...
Page 38
... dusky coma is in striking harmony with the spectroscopic discovery of Huggins : this feature , missed or obliterated in the general sketch , is especially delineated in the detailed one ; and the whole aspect carefully described in the ...
... dusky coma is in striking harmony with the spectroscopic discovery of Huggins : this feature , missed or obliterated in the general sketch , is especially delineated in the detailed one ; and the whole aspect carefully described in the ...
Page 45
... dusky border , others a narrow luminous ring : both , probably , deceptions from the violent contrast and the fatigue of the eye , especially as others have remarked nothing of the kind . A similar ex- planation may be applied to a ...
... dusky border , others a narrow luminous ring : both , probably , deceptions from the violent contrast and the fatigue of the eye , especially as others have remarked nothing of the kind . A similar ex- planation may be applied to a ...
Page 51
... dusky spots , the former giving a rotation in 23h 21m ; subsequently , in the air of France , he never could recover them . In 1726 and 1727 Bianchini , at Rome , ob- served spots many times with a 66 f . refractor , aperture a little ...
... dusky spots , the former giving a rotation in 23h 21m ; subsequently , in the air of France , he never could recover them . In 1726 and 1727 Bianchini , at Rome , ob- served spots many times with a 66 f . refractor , aperture a little ...
Page 52
... dusky spot in the twilight , which in half an hour was lost in increasing glare ; others , visible with a small telescope , he found effaced in a larger one --a caution for future observers . Much more effective results were obtained at ...
... dusky spot in the twilight , which in half an hour was lost in increasing glare ; others , visible with a small telescope , he found effaced in a larger one --a caution for future observers . Much more effective results were obtained at ...
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Common terms and phrases
achr achromatic aperture astronomers atmosphere beautiful Binary bluish Boöt bright brighter brilliant Buffham centre Ceph Clusters colour comet constellation craters Crown 8vo curious dark Dawes diameter disc Double Stars Drac dusky Earth Edition eye-piece faint field flushed white grey Herc Herschel Huggins interior JOHN TYNDALL Jupiter Lassell libration light lilac limb luminous lunar minute stars Moon naked eye nearly Nebulæ noticed nucleus object object-glass observers orange pair pale blue pale white pale yellow photosphere Pisc planet Post 8vo proper motion Red Star reflector region remarkable revised Right Ascension ring ruddy satellites Schm Schr Schröter Schwabe Secchi seen shadow shew side smalt solar sometimes spec spots streaks Taur telescope topaz Triple visible vols Woodcuts XIVh xIxh xvih XVIII yellowish
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