Telescope earliest existing record of a telescope was a 1608 patent submitted to the government in the Netherlands by Middelburg spectacle maker Hans Lippershey for a refracting telescope. The actual inventor is unknown but word of it spread through Europe. [[Galileo Galilei|Galileo]] heard about it and, in 1609, built his own version, and made his telescopic observations of celestial objects. The idea that the [[Objective (optics)|objective]], or light-gathering element, could be a mirror instead of a lens was being investigated soon after the invention of the refracting telescope. The potential advantages of using [[parabolic reflector|parabolic mirrors]]—reduction of [[spherical aberration]] and no
Zacharias Conrad von Uffenbach Zacharias Conrad von Uffenbach Zacharias Conrad von Uffenbach (22 February 1683 – 6 January 1734) was a German scholar, bibliophile, book-collector, traveller, palaeographer, and consul in Frankfurt am Main who is best known today for his published travelogues. He was born in lawyer's family. His younger brother Johann Friedrich von Uffenbach accompanied him on his travels. Uffenbach described 18th-century curiosity cabinets and scientific collections that later became the basis for museums, such as the private collection of Hans Sloane, that later was absorbed into what today is the British Museum. In 1710 he visited Cambridge and Oxford to examine manuscripts