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physical object > artifact > device > instrument > optical device > detector > imager > image intensifier > image photon counting system |
image photon counting system comparison table |
Subject | has definition | has acronym | is a kind of |
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image intensifier | An electronic device for increasing the brightness of a faint optical image. The image is first formed on a thin metallic surface called a photocathode from which electrons are then ejected. The stream of electrons is accelerated and focussed onto a phosphorescent screen which glows brightly as a result of the impact. | imager | |
image photon counting system | A form of very low light level detector used in astronomy. By means of an image intensifier the IPCS is capable of counting individual photons of light. | IPCS | image intensifier |