Light Pollution Meter

Handheld and pc based monitoring sky brightness in one meter.

Light pollution meter.

The graph below shows data collected in a windowless room in the apogee building using an sq 640 light pollution sensor and an at 100 µcache bluetooth datalogger the light pollution sensor was placed in the back of the room about 25 feet 8 m from the door. The meter then converts that amount of light into units of magnitudes per square arc second. The sq 640 light pollution sensor from apogee instruments can detect trace amounts of light from 340 to 1040 nm. Due to light pollution the night sky over many of our cities is hundreds of times brighter than a natural starlit sky.

Thus safe currently recommends an sec of two to three watts per meter for roads less than ten metres. We can offer our controllers for. Ascom canon lens controller. It is exacerbated by excessive misdirected or obtrusive use of light but even carefully used light fundamentally alters natural conditions.

A meter reading of 21 00 would indicate a very dark site while a reading of 16 00 would indicate a light polluted sky. At the same time a number of individuals and groups. The larger the number read on the meter display the darker the sky. Light pollution meter pro.

The introduction of the sky quality meter and the international year of astronomy lightmeter have led to a large number of permanent online skyglow monitoring stations. For ios there is a nice app called dark sqm meter that allows you to use your phone as an sqm device to measure the darkness of your sky.