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Useful Links

Globe at Night |
International citizen-science campaign to raise public awareness of the impact of light pollution by inviting citizen-scientists to measure their night sky brightness and submit their observations to a website from a computer or smart phone.

Clear Sky Chart |
Astronomers forecast showing at a glance when, in the next 48 hours, we might expect clear and dark skies for one specific observing site.

NASA Blue Marble Navigator |
Satellite maps of Earth showing how bad light pollution is where you live and around the world.

Light Pollution Map|

Map of lighting on Earth with overlays using data from 2010, 2014, 2015, 2016 and user SQM data.

Needless |
Free simulations, animations and posters creating awareness about light pollution.