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 Barbitsiotis casualties was nearly impossible, decided to assassinate him. The Turks approached a Maniot by the name of Koukeas and organised the assassination attempt with him. Koukeas went to Zacharias and told him that a Turkish fleet had appeared off Kitries. When Zacharias went to investigate this himself, he was assassinated near Kardamyli. Zacharias Barbitsiotis Zacharias Pantelakos, nicknamed Barbitsiotis () but more commonly known as "kapetan" Zacharias (Καπετάν Ζαχαριάς, 22 October 1759 – 20 July 1804) was a Greek klepht in the Peloponnese during the last decades of Ottoman rule over Greece. He is described by Kyriakos Kassis as the best