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Temperature Stability of the Sky Quality Meter
Institute for Space Sciences, Freie Universität Berlin, Carl-Heinrich-Becker-Weg 6-10, Berlin 12165, Germany
Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, Berlin 12587, Germany
* Author to whom correspondence should be addressed.
Received: 23 August 2013; in revised form: 6 September 2013 / Accepted: 9 September 2013 / Published: 11 September 2013
Abstract: The stability of radiance measurements taken by the Sky Quality Meter (SQM)was tested under rapidly changing temperature conditions during exposure to a stable lightfield in the laboratory. The reported radiance was found to be negatively correlated withtemperature, but remained within 7% of the initial reported radiance over a temperaturerange of -15 °C to 35 °C, and during temperature changes of -33 °C/h and +70 °C/h.This is smaller than the manufacturer’s quoted unit-to-unit systematic uncertainty of 10%,indicating that the temperature compensation of the SQM is adequate under expected outdoor operating conditions.
Keywords: light pollution; sky quality meter; light at night; temperature; stability; skyglow; night sky brightness
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Schnitt, S.; Ruhtz, T.; Fischer, J.; Hölker, F.; Kyba, C.C. Temperature Stability of the Sky Quality Meter. Sensors 2013, 13, 12166-12174.
Schnitt S, Ruhtz T, Fischer J, Hölker F, Kyba CC. Temperature Stability of the Sky Quality Meter. Sensors. 2013; 13(9):12166-12174.
Schnitt, Sabrina; Ruhtz, Thomas; Fischer, Jürgen; Hölker, Franz; Kyba, Christopher C. 2013. "Temperature Stability of the Sky Quality Meter." Sensors 13, no. 9: 12166-12174.