Handy methods of geodetic astronomy for land surveyors (1921)
Gribble, Theodore Graham · London, J. D. Potter · leaf 18
rom the table on p. 76to be about 6 p.m., and from the Ephemeris the Suns Right Ascensionto be a little more than 13 hours. At Sunset, then, stars of a little moreRight Ascension than the Sun, such as n Urs. Maj. (Benetnasch) will benearly setting. A star of about 6 hours more Right Ascension, such… … 4tr*«cTiflr<f m MiKvfrr DECLINATION m otu>t»Fig. 3.LET X = LATITUDE ; 8 = DECLINATION. ditto A. Meridional Altitude of Sun or Star of Northern Declination culminating Southwards B. Ditto of Southern 8 ditto C. Altitude when Azimuth = 90° D. Hour-Angle ditto ditto E. Altitude when Hour-Angle =…
Geodesy · Surveying
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