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April 20, 2014

Homework Help: astronomy

Posted by Matt on Monday, November 14, 2011 at 4:56pm.

At an average opposition, the Earth and Mars are separated by 0.52 AU. Suppose an astronomer observes Mars at opposition and that seeing blurs the images to a resolution of 1.0 seconds of arc. What is the smallest surface feature the astronomer would be able to resolve on Mars? How does this size compare with the diameter of Mars? (Hint: you will need the small angle equation to solve.)

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