Orion Over Sky

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Sriram Murali created the above video to show the effects that light pollution has on the beautiful night sky.  In it, he focuses on the constellation Orion, and how our perception of it changes based on the light density of the area we view it from.  The entire thing is a great example of one of the major downfalls of city life – loss of the night sky.  However, the entire thing also does suffer from a major unintended side-effect.  In order to take impressive night sky shots, you must take long exposure photos.  In the process of taking those photos, and in the post-processing necessary on them, you get many more stars visible than the human eye usually sees.  That makes the darker skies even more impressive in the time-lapse.

Regardless, it’s still a good teaching tool.  Hopefully you take the time to drive 100 miles from the city where you live to really experience the night sky!

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