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 387
Royal Obser-vatory at Greenwich, as well as numerous glasses ofsmaller aperture ; and his mountings are especiallycommended for rigidity. A type of clock-motion 334 Stars and Telescopes with electric control devised by Grubb permits theclose following of a star in its diurnal motion, withthat… … THE IMPERIAL OBSERVATORY AT VIENNA(£> Edmund Weiss, Director) in 1844, accident drew his attention to the construc-tion of a small reflector, the success of which led tohis making refractors. Two years later he was estab-lished in the business of telescope construction withhis two sons, Alvax…
Astronomy
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