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Telescopes from the Ground Up
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Using many light-collectors at once: Keck I plus Keck II

Images from the multi-mirror telescope Keck I and its newer twin, Keck II, are combined by computer. The effect is like having one gigantic mirror that can collect more light, and resolve more detail, than either Keck I or Keck II could alone.

Diagram demonstrating how combining the two Keck telescopes increases both light gathering cabability and increased resolution.
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