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Flagstaff vs. Prescott in Arizona is another good example. Flagstaff has strict output per area limits, Prescott has none, while the density of both areas is similar.

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Flagstaff makes an effort to enforce their lighting ordinances, Prescott makes no effort whatsoever.

I think the problem is that all the people who knew why the lighting ordinances were passed retired. Because Prescott doesn’t have Lowell Observatory in the city limits the reasons behind the ordinances were forgotten.

Blue-white outdoor lighting should be prosecuted as a public nuisance.

Astronomy isn't the only reason though. It affects wildlife pretty badly too.

Cave Creek Arizona is another dark sky area (where we live) and it's an excellent thing

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