Merriman, Mansfield, 1848-1925 · New York Wiley · leaf 112
A is shownby a circle joining iV and C, the meridian of the place by thecircle NPZ, and its co-latitude by the arc PZ. If 5 be thesun or a star QS is its declination and PS its co-declination,CS is its altitude and ZS its co-altitude or zenith distance.In the spherical triangle SZP the angle at P… … 40. FUNDAMENTAL NOTIONS. IO9 equinoxes it lies on the equator, and in the winter it liessouth of the equator. Azimuths and hour-angles in astronomy are generallymeasured from the south around through the west from 0° to360°, like azimuth in geodesy. It is, however, sometimesconvenient to give them…
Geodesy · Surveying
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