Imaging detectors for the ultraviolet

A review is presented of the available types of efficient middle- and far-UV imaging detectors. These include luminescent phosphors, semitransparent and opaque photocathodes, mesh-based photocathodes, microchannel plates, and solid-state devices. Certain important aspects of their performance and calibration are discussed, and mention is also made of some applications of these systems, particularly in UV astronomy.