![]() The Half Width Half Maximum (HWHM) of the angular sensitivity is ~10°.Included applications for reading data in Perl.All the features of our SQM-LU (USB model) plus Data logging capabilities. ![]() Precision readings at even the darkest sites.Sensor temperature, model number, and serial number are provided.Infrared blocking filter restricts measurement to visual bandpass.Sky brightness reported in visual magnitudes per square arcsecond.CCD users can make a correlation between the SQM reading and when the background reaches some ADC level.Help provide local ground truth for future sky brightness prediction with the Clear Sky Clock.Investigate how sky brightness correlates with the solar cycle and month-to-month sunspot activity.Calibrate the effect of sky brightness on qualitative measures such as the Bortle Scale.Determine which nights show the greatest promise for finding the 'faintest fuzzies'!.Monitor sky brightness through the night, night-to-night, and year-to-year.Set planetarium dome illumination to mimic the skies people are likely to experience elsewhere in the city.Document the evolution of light pollution in your area. ![]()
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