During the coming week (until August 14), we are running the first in a series of Loss of the Night app community experiments. This month we're asking people to make multiple observations as the stars come out during twilight. Since many observers live in places without much light pollution, twilight offers a way to do an apples-to-apples comparison.
The more people that take part, the more likely that we'll have a result that's statistically interesting. So if you have a clear sky sometime in the next week, try making an 8-star observation after the first star is out but before it's gotten all the way dark. Try to do the measurements quickly, so that the sky doesn't darken too much while you are observing.
I will present the results of the experiment at the webinars in September, but there will probably be a sneak preview for everyone on our mailing list.
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