If your an amateur astronomer, then you are familiar with the woes of light pollution. But even if you just take a casual look up into the night sky once in a while, light pollution is affecting what you can and can't see as well. It doesn't take a whole lot of stray light to wash out some of the finer points in the night sky.
If you'd like to do something about it, and raise awareness on the issue of light pollution, consider contributing to the Globe at Night campaign. It's pretty simple to participate in. Just go out at night at a specific time and look up. Let your eyes adjust, look at a constellation (Orion or Leo for those in the northern hemisphere), and then estimate the visual limting magnitude based on the amount of stars you see. You can compare what you see in the sky to a series of star charts provided by the campaign. After you've made your observation, simply report your findings on the Globe at Night website.
Visit the Globe at Night website for more information and to participate in the campaign.
http://www.globeatnight.org/
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