Globe at Night: A Citizen Science Tutorial
Globe at Night is the most widely used citizen science programme for measuring light pollution — over 300,000 observations from 180+ countries since 2006, and the direct data…
Light Pollution Research, Studies & Scientific Data
Satellite radiance datasets, Globe at Night measurements, VIIRS/DMSP analysis, and publications from the COST LoNNe network and affiliated institutions.
Falchi 2016 and Kyba 2017 Explained: The World Atlas Numbers
Three papers have done more to define the global light pollution debate than anything else published in the field. Falchi et al. (2016, Science Advances) mapped artificial sky…
SQM Buyer’s Guide: L vs. LU vs. LU-DL
A Sky Quality Meter (SQM) costs $155 to $287 USD and delivers a quantitative zenith sky brightness reading in under three seconds. Unihedron in Grimsby, Ontario, Canada is…
The LoNNe Intercomparison Campaigns (2013–2017): What Four Field Tests Revealed
Between 2013 and 2016, Loss of the Night Network (LoNNe) — COST Action ES1204 — coordinated four field intercomparison campaigns at European sites ranging from Bortle 2 island…
How to Measure Light Pollution: Methods, Data, and Research Tools
Light pollution is measured with Sky Quality Meters, calibrated cameras, and satellites — each capturing a different slice of the same problem. LoNNe’s four field intercomparison campaigns, run…