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Measuring light pollution
Radiance.....what is it and how do I compare it to other sites?
Looking at a reputable light pollution map and clicking on my backyard I get a Radiance figure of 0.17.....what do I compare this to?
How do I put this number in perspective?
Just by walking outside I know that it is good.......it's very dark and I can't discern any pollution.
What level of "radiance" are the rest of you taking photos in?
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