Newtonian telescope secondary mirror. This design reduces the size and cost of the telescope with a shorter overall telescope tube length (with the corrector extending the focal length in a "telephoto" type layout) combined with a less costly spherical mirror. Commercially produced versions of this design have been noted to be optically compromised due to the difficulty of producing a correctly shaped sub-aperture corrector in a telescope targeted at the inexpensive end of the telescope market. Newtonian telescope The Newtonian telescope, also called the Newtonian reflector or just the Newtonian, is a type of reflecting telescope invented by the English scientist Sir
Peter Conde Peter Conde Peter Conde (born 2 December 1958) is an Australian sailor and leading Australian sport administrator. In August 2017, he was appointed as the Director of the Australian Institute of Sport. Conde was born on 3 December 1958. He has attained a Bachelor of Mechanical Engineering from University of Queensland and Masters of Business Administration from Australian Graduate School of Management. Prior to his appointment as Yachting Australia Performance Manager, Conde worked for international consulting firms Boston Consulting Group and A T Kearney. Conde is a successful sailor with a silver medal in the laser class at the 1979