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" 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... "
Astronomical Register: A Medium of Communication for Amateur Observers and ... - Page 36
1867
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Proceedings of the Royal Society of London, Volume 8

Royal Society (Great Britain) - Electronic journals - 1857
...average time of exposure ; a period which, even were it prolonged four or five times, would not then be too severe a tax upon a steady and skilful hand and eye. Description of the Photographic Process. The glass employed for taking the original negative of the...
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Proceedings of the Royal Society of London, Volume 8

Royal Society (Great Britain) - Electronic journals - 1857
...average time of exposure ; a period which, even were it prolonged four or five times, would not then be too severe a tax upon a steady and skilful hand and eye. Description of the Photographic Process. The glass employed for taking the original negative of the...
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The London, Edinburgh and Dublin Philosophical Magazine and Journal of Science

Physics - 1857
...average time of exposure ; a period which, even were it prolonged four or five times, would not then he too severe a tax upon a steady and skilful hand and eye. Description of the Photographic Process. The glass employed for taking the original negative of the...
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Proceedings of the Literary and Philosophical Society of Manchester, Volumes 3-7

Literary and Philosophical Society of Manchester - Natural history - 1864
...an eyepiece, with a power of 200 on the finder, keeping the cross-wires steadily on one spot. With this instrument Mr. Hartnup had taken a large number...his paper Mr. Crookes gives some particulars as to the time required to obtain negatives of the moon with different telescopes, from which it appears...
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The Civil Engineer and Architect's Journal, Volume 29

Architecture - 1866
...photography, by having a proper arrangement of lenses, so as throw an enlarged image of the moon at once ou the collodion plate ; and he states that the want...severe a tax upon a steady and skilful hand and eye. Mr. Grubb read a paper on this subject before the ,Dublin Photographic Society on May 6th, 1857. After...
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Descriptive Astronomy

George Frederick Chambers - Astronomy - 1867 - 816 pages
...collodion plate; and he states that the want of light could be no objection, as an exposure of from 2 to 10 minutes would not be " too severe a tax upon a steady...his paper Mr. Crookes gives some particulars as to the time required to obtain negatives of the Moon with different telescopes, from which it appears...
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The Moon: Her Motions, Aspect, Scenery, and Physical Condition

Richard Anthony Proctor - Moon - 1873 - 394 pages
...collodion plate; and he states that the want of light could be no objection, as an exposure of from 2 to 10 minutes would not be .' too severe a tax upon a steady...his paper Mr. Crookes gives some particulars as to the time required to obtain negatives of the moon with different telescopes, from which it appears...
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A Handbook of Descriptive Astronomy

George Frederick Chambers - Astronomy - 1877 - 928 pages
...and he states that the want of light could be no objection, as an exposure of from 2 to 10 minufes would not be ' too severe a tax upon a steady and...his paper Mr. Crookes gives some particulars as to the time required to obtain negatives of the Moon with different telescopes, from which it appears...
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