Thorn EMI dummy encapsulated image intensifier tube type 9912 Thorn EMI dummy encapsulated image intensifier tub Astronomy 1975-1983
Solenoid for EMI Image Intensifier, parts of an image photon counting system used on the Anglo-Australian Telescope at Siding Springs in New South Wales, Australia. Solenoid for EMI Image Intensifier Astronomy 1975-1980
Thorn EMI dummy non-encapsulated intensifier tube type 9912 Thorn EMI dummy non-encapsulated intensifier tube Astronomy 1975-1983
