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 159
stly been considered one of the finest specimens of the opticians art.From 1873 the size of the refracting telescope rapidly increased. In 1879 one twenty-seven inches in diameterwas constructed for the observatory at Vienna; and in the same year one twenty-nine inches, for the observatoryof Paris.… … Fig. 26. THE LICK REFRACTOR. ASTRONOMICAL INSTRUMENTS. 97 great Lick Refractor, with au aperture of no less than thirty-six inches [see Fig. 26). The difficultiesto be overcome in the construction of this monster instrument were enormous. Numerous discs ofglass had to be cast before suitable ones…
Astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.