Someone may have already posted about this, but I downloaded Google Earth yesterday. To my surprise
when it loaded up, I went to see what my neighborhood looked like. It came up with the light pollution map overlay that looks a lot the same as the LP map from the CSC. Good news, I thought!.
For an interesting tour on Google Earth, check out this amazing astronomical wonder of a sundial! look up JANTAR MANTAR, in New Delhi, India
Google Earth has LP overlay
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