Lockyer, Norman, Sir, 1836-1920 · London : Macmillan and Co. · leaf 286
liesomewhere in the plane of the meridian. If the positionof the pole were exactly marked by the pole-star, thatstar would remain immoveable in the meridian; and whena celestial body, the position of which we wished todetermine, was also in the meridian, if we adjusted thecircle so that it read 0°… … Perspective View of the Transit Circle at Greenwich. DETERMIXATION OF POS/TIOAS. 253 526. IJut as the pole-star do(!s not exactly mark theposition, \\Q have to adopt some other method. Weobserve the zenith distance (Art. 329) of a circumpolarstar %vhen it passes over the meridian above the pole,…
Astronomy · Solar system
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