Celestial objects for common telescopesLongmans Green, 1873 |
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Page 16
... brilliant night is often worthless for planets or double stars , from its blurred or tremulous definition ; it will serve , however , for grand general views of bright groups or rich fields , or for irresolvable nebula , which have no ...
... brilliant night is often worthless for planets or double stars , from its blurred or tremulous definition ; it will serve , however , for grand general views of bright groups or rich fields , or for irresolvable nebula , which have no ...
Page 25
... brilliant specks , or streaks , even close to the umbra . Schmidt describes one of these insulated specks as the brightest portion at that time visible . They have been frequently seen to disappear in float- ing over the umbra . Sun ...
... brilliant specks , or streaks , even close to the umbra . Schmidt describes one of these insulated specks as the brightest portion at that time visible . They have been frequently seen to disappear in float- ing over the umbra . Sun ...
Page 27
... brilliant region ; at a still greater depth , in the interior of the umbra , a feeble luminosity , marking the ' cloudy stratum ' of Dawes ( or cirri ' of Secchi ) ; and below both these the dark body of the Sun , forming the nucleus ...
... brilliant region ; at a still greater depth , in the interior of the umbra , a feeble luminosity , marking the ' cloudy stratum ' of Dawes ( or cirri ' of Secchi ) ; and below both these the dark body of the Sun , forming the nucleus ...
Page 36
... brilliant interstices ; thus agreeing precisely with the view given in 1792 by Herschel I. The less luminous interstices are frequently stippled with dusky or nearly black points , seldom circular , and often arranged in rows . In the ...
... brilliant interstices ; thus agreeing precisely with the view given in 1792 by Herschel I. The less luminous interstices are frequently stippled with dusky or nearly black points , seldom circular , and often arranged in rows . In the ...
Page 52
... brilliant round specks , and Schumacher a 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 ...
... brilliant round specks , and Schumacher a 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 ...
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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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