It was eventually sold to finance the purchase of the school's current Parks Newtonian telescope. IIST also has a small observatory on campus equipped with an 8-inch Newtonian telescope. Newtonian telescope was assembled only about 1968. Isaac Newton builds the first reflecting telescope, his Newtonian telescope. This type of telescope is still called a Newtonian telescope. The first permanent housing on the site was built to shelter a aperture Newtonian telescope. The device was a Newtonian telescope on a three-axis mount. In 1721 he showed the first parabolic Newtonian telescope to the Royal Society. For example, a Newtonian telescope of aperture is a moderately easy science fair project. The main instrument at Sherwood Observatory is a Newtonian telescope on an equatorial fork mount. The Newtonian telescope was the first successful reflecting telescope, completed by Isaac Newton in 1668. The EXPO 2000 observatory in Melle-Oberholsten runs the largest Newtonian telescope used for public observation.