high-speed photometry

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A form of photometry in which the photons are counted at short time intervals, generally between 10 ms and 10s, to detect rapid changes in brightness of objects such as pulsars and variable stars. Exposures for normal photometry typically range anywhere between 10 and 100 seconds. Photomultipliers or area photometers are used as detectors. The same high-speed technique has also been applied to polarimetry.

Subjects: Astronomy and Astrophysics.

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