Astrographic Catalogue 1900 0 Oxford Section Dec 24 to 32 From Photographs T
Astrographic Catalogue 1900 0 Oxford Section Dec 24 to 32 From Photographs T
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In our eReader you can find the full English version of the book. Read Astrographic Catalogue 1900 0 Oxford Section Dec 24 to 32 From Photographs T Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Astrographic Catalogue 1900 0 Oxford Section Dec 24 to 32 From Photographs T
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To quickly assess the difficulty of the text, read a short excerpt:
% 3^, *o FB i ) vi.
a vi.
FB 290 3'9 30 1 203O i 902-685 23 37 o 13 E.
6 3 20 FB > i vi.
y viii.
P 250 3-6 28 I 2031 1902-685 23 46 o 7 E.
6 3 20 FB i * vi.
y viii.
S 2 54 3 - 38 I 2032 1902-685 23 55 o i W.
6 3 20 FB > > vi.
B vii.
L 283 3'8 3 I The total number of images measured is 65750, which would have been increased to 69330 if all the stars had been measured in cases marked f- IV. MEASUREMENT OF THE PHOTOGRAPHS.
(i. ) Description of the Micrometer.
The general method of measurement is t...he same as at Greenwich, except that it was not found possible to obtain a " duplex " micrometer, and hence each plate was measured quite independently, and not in conjunction with overlapping plates.
The plates are placed in a frame movable in the direction of the y co-ordinate, and a microscope carried on a horizontal slide moves in the x co-ordinate.
For the measurement of the photographs, a glass diaphragm with two scales at right angles, divided so that one division corresponds to O'Ol of a reseau interval, or 3", is placed in the focal plane of the viewing microscope.
What to read after Astrographic Catalogue 1900 0 Oxford Section Dec 24 to 32 From Photographs T?
You can find similar books in the "Read Also" column, or choose other free books by University of Oxford Observatory to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
% 3^, *o FB i ) vi.
a vi.
FB 290 3'9 30 1 203O i 902-685 23 37 o 13 E.
6 3 20 FB > i vi.
y viii.
P 250 3-6 28 I 2031 1902-685 23 46 o 7 E.
6 3 20 FB i * vi.
y viii.
S 2 54 3 - 38 I 2032 1902-685 23 55 o i W.
6 3 20 FB > > vi.
B vii.
L 283 3'8 3 I The total number of images measured is 65750, which would have been increased to 69330 if all the stars had been measured in cases marked f- IV. MEASUREMENT OF THE PHOTOGRAPHS.
(i. ) Description of the Micrometer.
The general method of measurement is t...he same as at Greenwich, except that it was not found possible to obtain a " duplex " micrometer, and hence each plate was measured quite independently, and not in conjunction with overlapping plates.
The plates are placed in a frame movable in the direction of the y co-ordinate, and a microscope carried on a horizontal slide moves in the x co-ordinate.
For the measurement of the photographs, a glass diaphragm with two scales at right angles, divided so that one division corresponds to O'Ol of a reseau interval, or 3", is placed in the focal plane of the viewing microscope.
What to read after Astrographic Catalogue 1900 0 Oxford Section Dec 24 to 32 From Photographs T?
You can find similar books in the "Read Also" column, or choose other free books by University of Oxford Observatory to read onlineMoreLess
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