The "Sky Quality Meter" measures the brightness of the night's sky giving readings of magnitudes per square arcsecond. It offers unprecedented sensitivity in a handheld meter.
- The Full Width Half Maximum (FWHM) is ~20°.
- Run on Included 9V battery.
- Size 3.6 x 2.6 x 1.1 in. (92 x 67 x 28mm)
- Weight 0.31 lb (0.14 kg)
- Maximum light sampling time: 80 seconds.