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|22:59, 5 April 2009|
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|1,253 × 612 (46 KB)||GuentherWuchterl||Measurements of Lightmeter L12 at Tautenburg. A very clear night with the half-moon shining before midnight and the illumination decreasing to 0.001 Lux later. Note the non-linear, daylight part of the lightmeter, that operates above the horizontal line i|
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