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Proceedings Paper

Transputer-based image photon-counting detector
Author(s): Martin K. Carter; R. Cutler; B. E. Patchett; Peter David Read; Nicholas R. Waltham; Ian G. van Breda
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Paper Abstract

A prototype microprocessor-based electronic processing system is described which performs the on-line data processing in an image photon-counting detector. The detector head consists of a microchannel-plate intersifier optically coupled to a CCD with rapid-scanned readout. The digitized data are passed to a group of transputers which separate out the events, calculate the event centers to subpixel accuracy and accumulate the results in an image buffer. In the prototype, all processing is done in software for evaluation purposes. This paper discusses the basic design of the system, the centroiding algorithm and fixed patterning correction, and the implications of the results for future systems.

Paper Details

Date Published: 1 July 1990
PDF: 13 pages
Proc. SPIE 1235, Instrumentation in Astronomy VII, (1 July 1990);
Show Author Affiliations
Martin K. Carter, Rutherford Appleton Lab. (United Kingdom)
R. Cutler, Rutherford Appleton Lab. (United Kingdom)
B. E. Patchett, Rutherford Appleton Lab. (United Kingdom)
Peter David Read, Rutherford Appleton Lab. (United Kingdom)
Nicholas R. Waltham, Rutherford Appleton Lab. (United Kingdom)
Ian G. van Breda, Royal Greenwich Observatory (United Kingdom)

Published in SPIE Proceedings Vol. 1235:
Instrumentation in Astronomy VII
David L. Crawford, Editor(s)

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