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Proceedings Paper

Development of the BIGMIC photon-counting detector for astronmomical applications
Author(s): John L. A. Fordham; David A. Bone; R. M. Michel-Murillo; Timothy J. Norton; Iain G. Butler; Robert J. Airey
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Paper Abstract

University College London and The Imperial College of Science, Technology & Medicine are together developing a new large area imaging photon counting system, BIGMIC, for use primarily on very large telescopes. This detector is designed for applications requiring the highest sensitivity and resolution such as, high dispersion Echelle spectroscopy. The system incorporates a specially designed 75mm active diameter image intensifier fibre- optically coupled to a fast scanning 770 x 576 pixel frame transfer CCD. Photon events at the intensifier output screen are centroided to 1/8 of a CCD pixel in both X and Y in order to sample adequately the point spread function of the intensifier, giving a data acquisition format of 6160 x 4608 sub-pixles. The area imaged onto the CCD is 61mm x 46mm with a data acquisition pixel size of 10 micrometers . A hardware windowing facility, built into the detector system, enables the astronomer to select a subset of the imaging area for data acquisition. This permits the user to match the system to specific applications; for example in a number of spectroscopic applications an essentially one dimensional image is required and a detector format of perhaps 6160 x 100 pixels could be utilized.

Paper Details

Date Published: 1 June 1994
PDF: 7 pages
Proc. SPIE 2198, Instrumentation in Astronomy VIII, (1 June 1994); doi: 10.1117/12.176782
Show Author Affiliations
John L. A. Fordham, Univ. College London (United Kingdom)
David A. Bone, Univ. College London (United Kingdom)
R. M. Michel-Murillo, Univ. College London (United Kingdom)
Timothy J. Norton, Imperial College of Science, Technology and Medicine (United States)
Iain G. Butler, Imperial College of Science, Technology and Medicine (United Kingdom)
Robert J. Airey, Imperial College of Science, Technology and Medicine (United Kingdom)

Published in SPIE Proceedings Vol. 2198:
Instrumentation in Astronomy VIII
David L. Crawford; Eric R. Craine, Editor(s)

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