Light Pollution

The level of light pollution at your observing site has more influence on what you can see than any other factor.

Bortle Dark-Sky Scale
Assess your location’s darkness with this nine-level numeric scale that measures the night sky’s and stars’ brightness (naked-eye and stellar limiting magnitude) of a particular location.

UK Light pollution Map
A series of maps and Google Earth overlays showing light pollution levels where you live.

Needless has been set up to raise awareness of the impact of light pollution on everyone, not just astronomers, and why we should all be more concerned. Try the Night Sky Simulator about halfway down the page.

Campaign for Dark Skies
The CfDS aims to preserve and restore the beauty of the night sky by campaigning against excessive, inefficient and irresponsible lighting that shines where it is not wanted nor needed.

Campaign for the Protection of Rural England’s Dark Skies website section.

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