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Old 10-01-2010, 10:50 AM
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Robh (Rob)
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Join Date: Feb 2009
Location: Blue Mountains, Australia
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The APOD info on Betelgeuse is a fascinating read.
Amazing they can image a disk let alone "see" any surface features.
According to the information given (angular diameter about 40 mas from the image, distance 600 light years), I calculate the diameter of the star as roughly 2.2 billion kms!

Thanks for posting,
Regards, Rob.
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