Merriman, Mansfield, 1848-1925 · New York Wiley · leaf 122
thenundamped, the telescope pointed atPolaris, which is followed until it reachesits elongation, and then the horizontalcircle is read again. Thus on August15, 1899, at about 9:50 P.M. local time,an eastern elongation occurred and anobserver in latitude 40° 36 took thereading 87° 09 30 when the… … 43- AZIMUTH BY POLARIS AT ELONGATION. II9 this case, as shown in the figure, the direction of AB is14° 42 34 to the eastward of the meridian and accordinglyits geodetic azimuth is 194° 42 34. By the above method only one reading of the horizontalcircle can be taken on Polaris, and hence there is no…
Geodesy · Surveying
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