Charge-coupled devices: frame adding as an alternative to long integration times and cooling

Details Charge-coupled devices: frame adding as an alternative to long integration times and cooling Charge-coupled devices: frame adding as an alternative to long integration times and cooling

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992opten..31..522o&link_type=abstract

Optical Engineering 31(03), 522-526, Brian J. Thompson; Ed.

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CCDs used for low light level applications require a long integration time and/or cooling to have acceptable SNR. Standard commercially available CCD cameras (e.g., for TV applications) are used with a relatively short integration time (approximately equals 1/60 s per field) and are operated at room temperature. Consequently, these cameras will have poor SNR is used for low light level applications. The addition of successive frames from a standard CCD camera for the improvement of the SNR is considered here. We show, using a simple model, that a range of signal levels (as low as a few mLux) exists for which frame addition is a viable alternative to long integration times and cooling.

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