Star Colors Within Orion
In this view of the constellation Orion, star trails are viewable due to a new experimental step-focus technique. This allows astronomers to more easily view the colors of each star. As I've learned in class, this means that this method could be used to determine the temperatures of the stars in view. The red stars are cooler, while the blue stars are hotter. As an example, in the top left is the red super-giant called Betelgeuse which I saw was orange/red through Mr. Percival's telescope.
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