Dark Sky Meter
Helps you measure the night sky brightness

The Award winning Dark Sky Meter by DDQ helps you measure the night sky brightness with the press of a button.
Get instant information about the night sky quality and contribute to create a global map of sky darkness.
Featured on BBC Television, CBS.com, Scientific American, Scistarter and many more influential websites and magazines.
At a fraction of the cost of a commercial Sky Quality Meter.
Available for download now!

User comment: Fantastic! Settling the argument with my observing friends over which of our sites is better is worth the $5 all by itself. And if I win the wager for a beer, it will be like getting the app for free.
Jeff Morgan, Prescott AZ

Download the app here!

The Team

About Us

This app is made by Norbert Schmidt and Harro treur. We are amateur astronomers and use the app as an alternative to expensive SQM meters.
We hope to raise light pollution awareness and help scientists investigate sources of light.
These are the volunteers which helped us making the great app, website and map:

Norbert Schmidt

App developerDDQ

Harro Treur

Engineering wizard

Mario Hodzelmans


Joep van der Heiden

Map developer

Christopher Kyba

Light at night researcherLoss of the night

J. Bernard Minster

Distinguished professor of geophysics at the Institute of Geophysics and Planetary Physics (IGPP) of the Scripps Institution of Oceanography, University of California San Diego