• Find out how good the night or site REALLY is.

• Compare the sky brightness at different sites quantitatively.

• Document the evolution of light pollution in your area.

• Set planetarium dome illumination to mimic the skies people are likely to experience elsewhere in the city.

• Monitor sky brightness through the night, night-to-night, and year-to-year.

• Determine which nights show the greatest promise for finding the 'faintest fuzzies'!

• Calibrate the effect of sky brightness on qualitative measures such as the Bortle Scale.

• Investigate how sky brightness correlates with the solar cycle and month-to-month sunspot activity.

• Help provide local ground truth for future sky brightness prediction with the Clear Sky Clock.

• CCD users can make a correlation between the SQM reading and when the background reaches some ADC level.