Steps Toward Efficient Mosaic CCD System Design

Wonyong Han, Martin J. Clayton, David D. Walker

Research output: Contribution to journalArticle

Abstract

The areas of available optical detectors are too small for large imaging formats, such as telescope focal planes. One way to obtain large detector areas is to assemble mosaics of CCDs. Parallel driving of many CCDs rules out the possibility of individual tuning; however, such optimization is important, when the ultimate low light-level performance is required, particularly for new, or mixed, devices. In this work, an entirely novel approach, where the drive waveforms are multiplexed and interleaved, is described. This method reduces the number of leadout connections and permits individual device optimization. The controller basically comprises one memory device plus one PLD (programmable logic device) where most of the logic is integrated, minimizing the chip count and improving the efficiency of the system greatly. The system software has a flexible architecture for tailoring to specific operation modes and readout modes. The controller design can handle a mixture of CCD types in any geometric format. The laboratory prototype has been integrated and demonstrated.

LanguageEnglish
Pages1028-1032
Number of pages5
JournalPublications of the Astronomical Society of the Pacific
Volume108
Issue number729
DOIs
Publication statusPublished - Nov 1996
Externally publishedYes

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systems engineering
charge coupled devices
format
controllers
programmable logic devices
optimization
detectors
software
logic
readout
waveforms
chips
tuning
prototypes
telescopes
computer programs
detector
mosaic
laboratory
method

Cite this

Han, Wonyong ; Clayton, Martin J. ; Walker, David D. / Steps Toward Efficient Mosaic CCD System Design. In: Publications of the Astronomical Society of the Pacific. 1996 ; Vol. 108, No. 729. pp. 1028-1032.
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Steps Toward Efficient Mosaic CCD System Design. / Han, Wonyong; Clayton, Martin J.; Walker, David D.

In: Publications of the Astronomical Society of the Pacific, Vol. 108, No. 729, 11.1996, p. 1028-1032.

Research output: Contribution to journalArticle

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