"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 Measurment Network, or COSMN. Skyglow is literally the glowing sky night due to both man-made artificial light and natural light. SQMs measure the brightness of the night sky and provide a measure of both light pollution and natural light at night.
Click on the PDF below to read the technical report on the COSMN from June to Mid-August 2019