Schmidt camera Schmidt camera A Schmidt camera, also referred to as the Schmidt telescope, is a catadioptric astrophotographic telescope designed to provide wide fields of view with limited aberrations. The design was invented by Bernhard Schmidt in 1930. Some notable examples are the Samuel Oschin telescope (formerly Palomar Schmidt), the UK Schmidt Telescope and the ESO Schmidt; these provided the major source of all-sky photographic imaging from 1950 until 2000, when electronic detectors took over. A recent example is the Kepler spacecraft exoplanet finder. Other related designs are the Wright Camera and Lurie–Houghton telescope. The Schmidt camera was invented by German-Estonian optician
Gregorian Institute of Paris thanks to the support of the new Archbishop of Paris since 1920, Louis-Ernest Dubois, and above all to the support of the monks of the Solesmes Abbey, who returned to France after their long exile to Quarr Abbey in England. That is why, taking advantage of this success, the Gregorian Institute in Paris was founded under the protection of the Cardinal. Dom Joseph Gajard of Solesmes was in charge of teaching Gregorian chant there for two years, between Wednesday and Friday. Two years later, a former student of the Schola Cantorum de Paris, Auguste Le Guennant, succeeded him, not only