Stars and telescopes; a hand-book of popular astronomy founded on the 9th ed. of Lynn's Celestial motions (1901)
Todd, David P. (David Peck), 1855-1939, Lynn, William Thynne, 1835-1911 · Boston, Little, Brown · leaf 419
ron-omy, or astronomy of precision, as it is often termed.Most important of all is the meridian circle, the jointinvention of Romer and Picard, before whose day theposition of a star or planet on the celestial sphere wasobserved by means of a quadrant. Hevelius con-ducted a long and valuable series… … HEVELIUS AND HIS CONSORT OBSERVING (The instrument is a quadrant of the i-jtk century, before telescopes were adapted to measurement of angles) sary to make a complete observation, and the starsdirection was fixed, not by the telescope, but by sightsor pinules. A surprising degree of accuracy…
Astronomy
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