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Why does the useful resolving power of a ground- based telescopewith a 2 meter diameter mirror not match its theoretical vaule?
Wiki User
∙ 14y ago
A ground-based telescope must look through 100 mile-thick ocean of air to look at the stars and planets, and the air, like water, distorts the things the astronomers are looking at. That's one of the reasons why telescopes are built near the peaks of tall mountains; to get above as much of the air as possible.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoAny ground based telescope will not be able to reach its theoretical resolving power because the Earth's atmosphere creates turbulence, which causes the images to be blurred. Even with the aid of adaptive optics, which greatly improves the resolving power of a terrestrial telescope, it still does not meet its theoretical limits. Check this link for more information: http://www.brighthub.com/science/space/articles/22545.aspx
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