A two-dimensional photon counting array

Details A two-dimensional photon counting array A two-dimensional photon counting array

Apr 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981pasp...93..242s&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 93, Apr.-May 1981, p. 242-246.

Computer Science

Performance

64

Astronomical Photometry, Charge Coupled Devices, Electrophotometers, Line Spectra, Microchannel Plates, Optical Memory (Data Storage)

Scientific paper

A two-dimensional photon counting array in operation at Mount Stromlo is described and its performance discussed. The detector consists of a highly intensified Fairchild SL 62925 charge coupled device (CCD) where the spectral response of the system can be varied by the use of intensifiers which have different cathode types (S-20, S-25) as the first electron-emitting surface. The format of the external memory is 760 x 488 event-centered pixels. Prior frame subtraction is used to achieve counting rates of 5 Hz pixel with 3% coincidence correction. The advantages of photon-counting array systems over analog CCD detectors are discussed.

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