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So it occurs to me that this map and other light pollution maps are estimated, not measured. The town I live in is in a valley. Go north past the mountains an
by bb88 6y ago
So it occurs to me that this map and other light pollution maps are estimated, not measured.
The town I live in is in a valley. Go north past the mountains and it gets very dark quickly. In fact, the light is blocked significantly that I don't have to go very far to get to a dark sky.
- GekkePrutser 6y agoI think it's taken from satellite at low resolution and then extrapolated. Because it doesn't correlate with population completely so there must be some measurements somewhere.