Our Chapter is partnering with Truman State University in Kirksville, MO, to offer two exciting programs that provide public institutions such as parks, recreational areas, educational institutions and municipalities with "Sky Quality Meters" ("SQM") to measure sky brightness at their location. Data collected by these SQMs will be used in scientific analysis and to develop programs to reduce light pollution.  Funding for the purchase of the SQM's is provided by the NASA-Missouri Space Grant Consortium. 

a) Sky Quality Meter Loaner Program (handheld meter)

We have a limited quantity of handheld Unihedron Sky Quality Meters that we will let you borrow for 30-days.  A great way to measure sky brightness at your location in just minutes.

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 b) Sky Quality Meter Program (continuous data logging)

Sky Quality Meters are disbursed throughout Missouri that log data on a continuous basis. The purchase of more units is planned. Typically these units are installed for one year. 

Participate: Apply for One-Year Loaner

Participate: Register Your Site



  • View SQM Installation Map
  • The publishing of graphs related to this project has been temporarily delayed due to COVID-19.
  • SQM1 indicates the SQM is managed by Truman State University
  • SQM2 indicates the SQM is privately owned and managed
  • Click on link to view details