Lockyer, Norman, Sir, 1836-1920, Seabroke, G. M. (George Mitchell), 1848-1918 · London, Macmillan and co. · leaf 266
o the transitinstruinent. ■ , Fig. 117 shows in what respect the Transit Circle isan advance upon the transit instrument and the muralcircle, for in addition to the transit instrument we havethe circle. This is a perspective view of the transit, andthe telescope is represented sweeping in the… … Fig. 118.—Persjiective view of Greenwich Transit <in-Ie. once that by means of this circle we are able to intro-duce tlie other co-ordinate of declination. If the clock i; -2 244 STARGAZING : PAST AND PRESENT. [book iv. goes true with the earth—if they both beat in unisonand keep time with eacli…
Astronomy · Telescopes
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
