Green Circles
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What are the green circles?? they're really cool, but really freaky. 😃
Posted
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by
JeanTate
in response to amakrako@uwo.ca's comment.
Welcome to Galaxy Zoo, amakrako@uwo.ca!
Those are ghosts, a kind of internal reflection of a bright star elsewhere in the field. The 'annular' shape (two concentric circles, black in the center) is - I think - some kind of image of the primary mirror of the telescope (yes, it has a hole in its center! 😮). However, I don't know why the inner rim is so much brighter than the rest ...
Happy hunting! 😃
Posted
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thank you! I almost thought you caught aliens 😉
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