Stars and telescopes; a hand-book of popular astronomy, founded on the 9th ed. of Lynn's Celestial motions (1899)
Todd, David P. (David Peck), 1855-1939, Lynn, William Thynne, 1835-1911. Celestial motions · Boston, Little, Brown and company · leaf 404
lent photographic telescope by mount-ing in front of it a meniscus of flint glass. In 1869he constructed the first instrument of this character,13 inches in aperture, and with it were taken, in RUTHERFURD (1816-1892) Telescopes and Houses for Them 345 August, 18 71, the first photographs of the… … THE 40-FOOT HORIZONTAL PHOTO-HELIOGRAPH{As mounted at the authors eclipse station in Japan, 1887) The transits of Venus, in 1874 and 1882, offeredexceptional opportunities for the application of pho-tography, and a type of instrument known as a hori-zontal photo-heliograph/ originated by the…
Astronomy
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