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Sensors 2013, 13(9), 12166-12174; doi:10.3390/s130912166
Article

Temperature Stability of the Sky Quality Meter

1
,
1
,
1
,
2
 and
1,2,*
1 Institute for Space Sciences, Freie Universität Berlin, Carl-Heinrich-Becker-Weg 6-10, Berlin 12165, Germany 2 Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, Berlin 12587, Germany
* Author to whom correspondence should be addressed.
Received: 23 August 2013 / Revised: 6 September 2013 / Accepted: 9 September 2013 / Published: 11 September 2013
(This article belongs to the Section Physical Sensors)
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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 light pollution; sky quality meter; light at night; temperature; stability; skyglow; night sky brightness
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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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.

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