IDA Oregon, established 2019

Our mission is to preserve Oregon's magnificent dark skies and to diminish light pollution for the health, safety, and well-being of all life.

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"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