A popular handbook and atlas of astronomy, designed as a complete guide to a knowledge of the heavenly bodies and as an aid to those possessing telescopes (1891)
Peck, William, Sir, 1862-1925 · New York, G. P. Putnam's Sons · leaf 164
he positions of the- different celestial objects had, for the most part,been determined by observations when out of the meridian. Tycho had indeed seen the great advantageof meridional observations over those made when the object was in other parts of the sky, but themethod he adopted did not give… … meridian. By means of a hole in the wall, near the apex of the instrument, in which a sight was placed,and a corresponding sight on the graduated limb of the quadrant, the instant of a celestial objectspassage across the meridian was determined ; while the position of the lower sight on the limb…
Astronomy
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