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" Call the zenith distance north or south, according as the zenith is north or south of the object. "
Outline of the Method of Conducting a Trigonometrical Survey, for the ... - Page 181
by Edward Charles Frome - 1850 - 253 pages
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Aid to survey-practice

Lowis d'Aguilar Jackson - 1880
...the corrected altitude from 90, and thus obtain the true zenith distance, which is then marked as north or south, according as the zenith is north or south of the celestial body ; then, if the declination is similarly marked in the Nautical Almanac, the sum of the...
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The American Practical Navigator: Being an Epitome of Navigation and ...

Nathaniel Bowditch - 1906 - 670 pages
...its zenith distance. From the figure we have: jrIQ 42. By attending to the names of z and d, marking the zenith distance north or south according as the zenith is north or south of the body, the above equation may be considered general for any position of the body at upper transit, as...
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American Practical Navigator: an Epitome of Navigation and Nautical Astronomy

Nathaniel Bowditch - 1920 - 842 pages
...distance. From the figure we have: QM+MZ, or FIG. SO. Q: By attending to tlie names of z and d, marking the zenith distance north or south according as the zenith is north or south of the body, the above equation may be considered general for any position of the body at upper transit, asM,...
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American Practical Navigator: An Epitome of Navigation & Nautical Astronomy ...

Nathaniel Bowditch - 1931 - 870 pages
...zenith distance. From the figure we have: QZ = OM + MZ, or By attending to the names of 2 and d, marking the zenith distance north or south according as the zenith is north or south of the body, the above equation may be considered general for any position of the body at upper transit, as...
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