Forum for Illumination Research, Engineering, and Science (FIRES)

Standards Category: Sky Glow
Figure 4 – Visual efficiency functions.

Quantifying Light Pollution Sources: The Quintic Root of Hipparchus

By Ian Ashdown, Senior Scientist
SunTracker Technologies Ltd.

Nighttime light pollution is sadly familiar to all of us. While our grandparents and great-grandparents may talk fondly of seeing the Milky Way in their youth, with thousands of stars scattered across the dark summer sky, we are mostly content with seeing a few dozen stars through the never-ending dusk of urban and suburban skies.

Read More