Wikipedia
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.
Usage examples of "schmidt camera".
Suddenly it sprang up in front of my eyes-great shiny domes, tall towers, radio telescopes, a giant Schmidt camera.