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Books Bücher 1 - 8 von 8 in In this cover at one side is a circular hole,/, three and a quarter inches diameter,...
" In this cover at one side is a circular hole,/, three and a quarter inches diameter, for the light to enter ; below is a similar hole over which is fitted a framework to receive the " backs " containing the photographic plates, and also to receive a frame... "
The Observatory - Seite 342
1883
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Proceedings of the Royal Society of London, Band 39

Royal Society (Great Britain) - 1886
...its place at the end of the tube a, d. The small plane speculum and the arm carrying it were removed. The open end of the tube is fitted with a mahogany cover. In this cover at one side is a circular hole,y, Sit inches in diameter, for the light to enter ; below...
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The Popular Science Monthly, Band 27

1885
...the Herschelian telescope is avoided. The small plane speculum and the arm carrying it were removed. The open end of the tube is fitted with a mahogany cover. In this cover at one side is a circular hole,/, three and a quarter inches diameter, for the light to...
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The American Journal of Science

1884
...its place at the end of the tube aa. The small plane speculum and the arm carrying it were removed. The open end of the tube is fitted with a mahogany cover. In this cover at one side is a circular hole/, three and a-quarter inches in diameter, for the light to...
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Annual Report of the Board of Regents of the Smithsonian Institution

1885
...21, were obtained with a Newtonian reflector by Short. Since then Miss Lassell has lent Dr. Huggius a seven-foot Newtonian telescope made by the late...end of the tube is fitted with a mahogany cover in ^vvhich are two circular holes three and a quarter inches in diameter. Through one of these the light...
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Proceedings, Band 11

Royal Institution of Great Britain - 1887
...the Herschelian teleecope is avoided. The small plane speculum and the arm carrying it were removed. The open end of the tube is fitted with a mahogany cover. In this cover at one side is a circular hole/, 3j inches diameter, for the light to enter ; below is a...
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Annual Report of the Board of Regents of the Smithsonian Institution

Smithsonian Institution. Board of Regents - 1885
...photography. The photographs referred to in his first paper read before the Royal Society, 1882, December 21, were obtained with a Newtonian reflector by Short. Since then Miss Lassell has lent Dr. Huggius a seven-foot Newtonian telescope made by the late Mr. Lassell. No secondary reflector is used,...
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Report of the Board of Regents

Smithsonian Institution. Board of Regents - 1885
...photography. The photographs referred to in his first paper read before the Royal Society, 1882, December 21, were obtained with a Newtonian reflector by Short....reflector is used, nor is the mirror tilted, but the open eud of the tube is fitted with a mahogany cover in which are two circular holes three and a quarter...
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Annual Report of the Board of Regents of the Smithsonian Institution

Smithsonian Institution. Board of Regents - 1885
...photography. The photographs referred to in his first paper read before the Koyal Society, 1882, December 21, were obtained with a Newtonian reflector by Short. Since then Miss Lassell has lent Dr. Hnggins a seven-foot Newtonian telescope made by the late Mr. Lassell. No secondary reflector is used,...
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