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Detecting Cloud with a Simple Infra-Red Sensor

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We have previously described the design and operation of a simple infra-red cloud detector intended for monitoring clouds at remote astrophysical observatories. If such a detector is to automatically scan and monitor the whole sky over long periods of time, it is necessary to have a method for reliably determining the distinction between a cloud signal and the clear sky over a range of meteorological conditions and zenith angles. We have accumulated data over a number of years of monitoring to enable a cloud discrimination method to be developed and good cloud discrimination to be reliably achieved. This paper describes the technique.


Document Type: Research Article

Publication date: May 1, 2009

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  • In 2004, the South Australian Museum and the Royal Society of South Australia became partners in Southern Scientific Press. This led to the amalgamation of their two professional journals. The Transactions of the Royal Society of South Australia now incorporates the Records of the South Australian Museum.
    Transactions of the Royal Society of South Australia deals with natural history relating to South Australia
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