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This is one of the greatest refinements of celestial navigaton: Weems makes usable the idea of Beij. Each page shows curves of equal altitude for three stars, compensating for the refraction at 5000 feet above Mean Sea Level. Editions beginning in 1940 are larger, on better paper, and show the three stars' curves in different colors.
There are two early editions. The first, in 1927, is in mimeographed form--with the sky-blue ink on white paper. From 1928 to 1930 a black-ink on (now discolored) pulp paper edition came out.
Star altitude curves were plotted for Harold Gatty's use in navigating around the world in 1931.
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Subjects
Tables, Navigation (Aeronautics), NavigationShowing 8 featured editions. View all 8 editions?
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1
Star altitude curves.: Positioned for epoch 1 January, 1945. Latitude 70 t̊o 80 n̊orth, latitude 80 t̊o 90 n̊orth.
1944, Weems system of navigation
in English
- 3d ed.
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2
Star altitude curves.
1940, Weems system of navigation
in English
- 3d ed. Latitude 50 t̊o 60 n̊orth. Positioned for epoch 1 Jan. 1915...
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3 |
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4
Star altitude curves.
1940, Weems system of navigation
in English
- 3d ed. Latitude 40 t̊o 50 n̊orth. Positioned for epoch 1 Jan. 1945.
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5
Star altitude curves.
1940, Weems system of navigation
in English
- 3d. ed. Latitude 0 t̊o 10 n̊orth. Positioned for epoch 1 Jan. 1945 ...
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6 |
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7 |
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8
Simultaneous Star Altitude Curves, Weems's Simultaneous Star Altitude Curves
1927, Rodney Stokes Press
Hardcover
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Book Details
Edition Notes
At foot of t.-p.: Copyright [by] P. V. H. Weems.
Tables and diagrams on lining-papers.
Classifications
The Physical Object
ID Numbers
Community Reviews (0)
Feedback?April 25, 2012 | Edited by Mark Prange | Edited without comment. |
April 25, 2012 | Edited by Mark Prange | First editilon in 1927 |
April 25, 2012 | Edited by Mark Prange | reverted to revision 7 |
April 25, 2012 | Edited by Mark Prange | The early editions show curves for just two stars. |
October 19, 2009 | Created by WorkBot | add works page |