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Proceedings Paper

32-megapixel dual-color CCD imaging system
Author(s): Christopher W. Stubbs; Stuart L. Marshall; Kenneth H. Cook; Robert Hills; Joseph P. Noonan; Carl W. Akerlof; Charles R. Alcock; Timothy S. Axelrod; D. P. Bennett; K. Dagley; K. C. Freeman; Kim Griest; Hye-Sook Park; Saul Perlmutter; Bruce A. Peterson; Peter J. Quinn; Alex W. Rodgers; C. Sosin; W. J. Sutherland
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Paper Abstract

We have developed an astronomical imaging system that incorporates a total of eight 2048 X 2048 pixel CCDs into two focal planes, to allow simultaneous imaging in two colors. Each focal plane comprises four 'edge-buttable' detector arrays, on custom Kovar mounts. The clocking and bias voltage levels for each CCD are independently adjustable, but all the CCDs are operated synchronously. The sixteen analog outputs (two per chip) are measured at 16 bits with commercially available correlated double sampling A/D converters. The resulting 74 MBytes of data per frame are transferred over fiber optic links into dual-ported VME memory. The total readout time is just over one minute. We obtain read noise ranging from 6.5 e- to 10 e- for the various channels when digitizing at 34 Kpixels/sec, with full well depths (MPP mode) of approximately 100,000 e- per 15 micrometers X 15 micrometers pixel. This instrument is currently being used in a search of gravitational microlensing from compact objects in our Galactic halo, using the newly refurbished 1.3 m telescope at the Mt. Stromlo Observatory, Australia.

Paper Details

Date Published: 12 July 1993
PDF: 13 pages
Proc. SPIE 1900, Charge-Coupled Devices and Solid State Optical Sensors III, (12 July 1993); doi: 10.1117/12.148597
Show Author Affiliations
Christopher W. Stubbs, Univ. of California/Berkeley and Univ. of California/Santa Barbara (United States)
Stuart L. Marshall, Univ. of California/Berkeley and Univ. of California/Santa Barbara (United States)
Kenneth H. Cook, Univ. of California/Berkeley and Lawrence Livermore National Lab. (United States)
Robert Hills, Lawrence Livermore National Lab. (United States)
Joseph P. Noonan, Lawrence Livermore National Lab. (United States)
Carl W. Akerlof, Univ. of California/Berkeley (United States)
Charles R. Alcock, Lawrence Livermore National Lab. (United States)
Timothy S. Axelrod, Lawrence Livermore National Lab. (United States)
D. P. Bennett, Lawrence Livermore National Lab. (United States)
K. Dagley, Univ. of California/Berkeley (United States)
K. C. Freeman, Mt. Stromlo and Siding Spring Observatories (Australia)
Kim Griest, Univ. of California/Berkeley and Univ. of California/San Diego (United States)
Hye-Sook Park, Lawrence Livermore National Lab. (United States)
Saul Perlmutter, Univ. of California/Berkeley (United States)
Bruce A. Peterson, Mt. Stromlo and Siding Spring Observatories (Australia)
Peter J. Quinn, Mt. Stromlo and Siding Spring Observatories (Australia)
Alex W. Rodgers, Mt. Stromlo and Siding Spring Observatories (Australia)
C. Sosin, Univ. of California/Berkeley (United States)
W. J. Sutherland, Univ. of California/Berkeley (United States)


Published in SPIE Proceedings Vol. 1900:
Charge-Coupled Devices and Solid State Optical Sensors III
Morley M. Blouke, Editor(s)

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