Light Pollution Meter

Light pollution map for ios showing the pollution in the north part of western europe where i live.

Light pollution meter. Light pollution is the presence of anthropogenic and artificial light in the night environment. The meter then converts that amount of light into units of magnitudes per square arc second. 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. It is exacerbated by excessive misdirected or obtrusive use of light but even carefully used light fundamentally alters natural conditions.

Handheld and pc based monitoring sky brightness in one meter. Ascom canon lens controller. 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. Due to light pollution the night sky over many of our cities is hundreds of times brighter than a natural starlit sky.

A meter reading of 21 00 would indicate a very dark site while a reading of 16 00 would indicate a light polluted sky. We can offer our controllers for. The sq 640 light pollution sensor from apogee instruments can detect trace amounts of light from 340 to 1040 nm. At the same time a number of individuals and groups.

Thus safe currently recommends an sec of two to three watts per meter for roads less than ten metres. Simple solution for canon ef ef s focus and iris drive.