Handy methods of geodetic astronomy for land surveyors (1921)
Gribble, Theodore Graham · London, J. D. Potter · leaf 21
nes A and H = O. Lines B and G become the diagonal of the diagram. Stars of Northand South Declination culminate to the North or South and havea Meridional Altitude = 90°—8- Curves C and D. The only stars having an Azimuth = 90° are thosewhose Declination = O, namely, those situated on the… … Fig. 4.let x = latitude ; 8 = declination. A. Meridional Altitude of Sun or Star of South- ern Declination culminating Northwards ... (1) Alt. =-90° X+8. B. Ditto of Northern 8 culminating Northwards (2) Alt. =90°-(X+S). C. Altitude when Azimuth = 90° (3) Sin. Alt. =sin. 8-=-sin. X. D. Hour-Angle,,…
Geodesy · Surveying
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