"Our lives begin to end, the day we become silent about things that matter"
- Dr. Martin Luther King Jr.
Measuring the Sky's Darkness
The Oregon Chapter of IDA has established a network of continuously-recording Sky Quality Meters (SQMs) in Central Oregon identified as the Central Oregon Sky Glow Measurement Network. Skyglow refers to the type of light pollution seen as the brightening of the night sky over inhabited areas. Sky glow occurs from unshielded lights and from light reflected from surfaces (see below illustration). SQMs measure the brightness of the night sky and provide a measure of both light pollution and natural light at night.
Links to the Technical Reports on the Central Oregon Skyglow Measurement Network
Presentation to the IDA Annual General Meeting, 2019 in Tucson: