Astronomical Register: A Medium of Communication for Amateur Observers and All Others Interested in the Science of Astronomy, Volume 4J. D. Potter., 1867 - Astronomy |
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Page 3
... nearly at its least possible distance from the Earth . Mr. Airy pointed out the advantages of this method in the various respects that Mars may then be compared with stars throughout the night ; that it has two observable limbs , both ...
... nearly at its least possible distance from the Earth . Mr. Airy pointed out the advantages of this method in the various respects that Mars may then be compared with stars throughout the night ; that it has two observable limbs , both ...
Page 6
... nearly certain that something of im- portance will have been left out . The general limit of the spots in latitude may be stated as above at 35 ° , but instances of spots seen beyond this are on record . In 1858 , Carrington saw one 44 ...
... nearly certain that something of im- portance will have been left out . The general limit of the spots in latitude may be stated as above at 35 ° , but instances of spots seen beyond this are on record . In 1858 , Carrington saw one 44 ...
Page 13
... Nearly all were equal to first magnitude stars , and some as fine as Jupiter and Sirius , and nearly two - thirds had tails or trains of sparks . At Cambridge Mr. Adams had observed some of the meteors , and good results had been ...
... Nearly all were equal to first magnitude stars , and some as fine as Jupiter and Sirius , and nearly two - thirds had tails or trains of sparks . At Cambridge Mr. Adams had observed some of the meteors , and good results had been ...
Page 18
... nearly two - thirds ( 172 ) left behind them , on their whole apparent courses , luminous streaks of phospho- rescent light , which remained visible two or three seconds after the dis- appearance of the meteors , fading gradually from ...
... nearly two - thirds ( 172 ) left behind them , on their whole apparent courses , luminous streaks of phospho- rescent light , which remained visible two or three seconds after the dis- appearance of the meteors , fading gradually from ...
Page 21
... Nearly opposite there was another , which was smaller . Both were rose- coloured , but the second was the paler of the two , and 2 min . in height ; while the first was 2 min . 40 sec . After the lapse of 38 secs . a series of coloured ...
... Nearly opposite there was another , which was smaller . Both were rose- coloured , but the second was the paler of the two , and 2 min . in height ; while the first was 2 min . 40 sec . After the lapse of 38 secs . a series of coloured ...
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Common terms and phrases
1st Oc 1st Sh 1st Tr Achromatic Refractor aperture appear approach of Moon Astronomer Royal ASTRONOMICAL REGISTER atmosphere axis binocular bright celestial circles colour comet Conjunction of Moon Corona correspondent crater Decl diameter disc distance double stars earth eclipse EDITOR Equatorial Stand equatorially mounted eye-pieces finder focal length focus glass Greenwich Herschel Huggins inches Jupiter last number lens letter light lines longitude lunar magnitude Mars Mean Noon Mercury Meridian Passage meteors micrometer miles minor planets month Monthly Notices Moon's nebula night object object-glass observations Observatory obtained Occultation orbit paper position Professor rays Reappearance of ditto reflector remarkable right ascension Royal Astronomical Society Saturn seen Sidereal solar spectrum Speculum spots Sun's superior conjunction surface telescope Thur tion Transit Instrument Troughton & Simms tube Tues Uranus variable star Venus visible
Popular passages
Page 206 - There it was that I found and visited the famous Galileo, grown old, a prisoner to the Inquisition for thinking in astronomy otherwise than the Franciscan and Dominican licensers thought.
Page 206 - He scarce had ceased, when the superior fiend Was moving toward the shore ; his ponderous shield, Ethereal temper, massy, large, and round, Behind him cast ; the broad circumference Hung on his shoulders like the moon, whose orb Through optic glass the Tuscan artist views At evening from the top of Fesole Or in Valdarno, to descry new lands, Rivers, or mountains, in her spotty globe.
Page 35 - Society, he was enabled to give attention to the subject during the greater part of the year following. The details of the process employed are given with much minuteness. The telescope used was the equatorial refractor at the Liverpool Observatory, of 8 inches aperture and iai feet focal length, which produced an image of the Moon i '35-inch diameter.
Page 32 - I saw, with a 12-inch reflector, a spot burst in pieces while I was looking at it. I could not expect such an event, and therefore cannot be certain of the exact particulars; but the appearance, as it struck me at the time, was like that of a piece of ice when dashed on a frozen pond, which breaks in pieces, and slides on the surface in various directions. I was then a very young astronomer, but I think I may be sure of the fact.
Page 37 - Sccchi, has been pointed out by Mr. De la Rue, namely, that those portions of the moon's surface which are illuminated by a very oblique ray from the sun possess so little photogenic power that, although to the eye they appear as bright as other portions of the moon illuminated by a more direct ray, the latter will produce the effect called by photographers solarisation, before the former (the obliquelyilluminated portions) can produce the faintest image.
Page 216 - Hence the potatoes, after remaining for some hours in the boiling water, were nearly as hard as ever. The pot was left on the fire all night, and next morning it was boiled again, but yet the potatoes were not cooked. I found out this by overhearing my two companions discussing the cause : they had come to the simple conclusion, "that the cursed pot (which was a new one) did not choose to boil potatoes.
Page 257 - PM, a small preliminary shower of rain fell, deep-toned thunder rolled and reverberated, and vivid lightning streamed and blazed over the devoted station. The hail was ushered in by a few bright lensshaped stones, as large as pigeons
Page 32 - I have eaid, 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.
Page 186 - The actual illumination of the lunar surface is not much superior to that of weathered sandstone rock in full sunshine. I have frequently compared the moon setting behind the grey perpendicular facade of the Table Mountain, illuminated by the sun just risen in the opposite quarter of the horizon, when it has been scarcely distinguishable in brightness from the rock in contact with it. The sun and moon being nearly at equal altitudes, and the atmosphere perfectly free from cloud or vapour, its effect...
Page 36 - Crookes afterwards enlarged his negatives -twenty diameters, and he expresses his opinion that the magnifying should be conducted simultaneously with the photography by having a proper arrangement of lenses, so as to throw an enlarged image of the moon at once on the collodion plate ; and he states that the want of light could be no objection, as an exposure of from two to ten minutes would not be " too severe a tax upon a steady and skilful hand and eye.