Wikipedia
Kraus-type
The Kraus-type radio telescope design was created by Dr. John D. Kraus (1910–2004).
Kraus-type telescopes are transit instruments, where the flat primary mirror reflects radio waves towards the spherical secondary mirror, which focuses it towards a mobile focal carriage. The primary tilts North-South to select any object near the meridian, while the focal carriage moves East-West along railroad ties to track objects near transit.
Nançay Radio Telescope and The Big Ear are Kraus-type telescope, and the southern section of the RATAN-600 ring can operate as a Kraus-type telescope.
Category:Radio telescopes