Solid Brass Telescope on Stand 17" - Leather

Though the process of silvering glass was discovered in 1857, and later the aluminizing of mirrors in 1932, lead to greater clarity and focusing power in marine telescopes, the basic design still stands. Along with the technological advancements in the lenses and mirrors, the dramatic increase in manufacturing power has allowed these telescopes for sale to become a tool accessible to just about anyone. However, telescope spyglasses are practically unchanged from the earliest devices of the 17^th century, built upon the same principles utilized by Galileo and his contemporaries. From the earliest, prehistoric crystal lenses, to Ptolemy’s writings on reflection, refraction, and optics in the 2^nd century AD, and on through the Scientific and Industrial Revolutions, these telescopes for sale have evolved into one of the most important tools in history. From its impact on astronomy and the Enlightenment, leading to the knowledge that the Earth is not the center of the universe, to its use at sea in charting maps and spotting enemies, the telescope in general, and these telescopes for sale, have become icons of innovation and determination, and symbols of the vision of man.