Wedge and strip image readout systems for photon-counting detectors in space astronomy

Physics – Optics

Scientific paper

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Astronomical Photometry, Display Devices, Optical Measuring Instruments, Photons, Radiation Counters, Readout, Anodes, Cesium Iodides, Extreme Ultraviolet Explorer Satellite, Microchannel Plates

Scientific paper

EUV and far UV applications of wedge and strip anodes in photon-counting microchannel plate detector systems are discussed in light of performance data obtained as a result of EUV Explorer spacecraft open face detector and FAUST-Spacelab far UV sealed tube sensor calibrations. CsI quantum detection efficiencies of about 80 percent at 114 A and about 40 percent at 600 and 1300 A have been achieved; a position sensitivity of less than 10 microns is demonstrated, and the position resolution, image linearity, background rate, and flat-field characteristics are discussed.

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