The Palomar 48 Inch Telescope (Samuel Oschin Telescope) is a 48 inch (1.2 meter) Reflector Telescope at Palomar Observatory in southern California. It opened in 1948 after nearly ten years in construction. It originally used photographic plates but now uses a CCD camera that covers a 4 degree by 4 degree Field of View (FOV). It is currently used for the Palomar Transient Factory (PTF), and automated.
Palomar Observatory Sky Survey (POSS)
Palomar Transient Factory (PTF)