How Does the Angular Resolution of the 305-M Arecibo Telescope

question 266

Multiple Choice

How does the angular resolution of the 305-m Arecibo telescope in Puerto Rico, which observes radio waves, compare with the angular resolution of the 10-m Keck telescope on Mauna Kea, Hawaii, which observes optical light? Assume each telescope observes the light they were designed to see.

• A) It is not possible to compare their angular resolution because they work in different wavelength ranges.
• B) The 305-m Arecibo telescope has much better angular resolution than the 10-m Keck telescope.
• C) They have about the same angular resolution because angular resolution is limited by turbulence in Earth's atmosphere, not by mirror diameter.
• D) The 305-m Arecibo telescope has much worse angular resolution than the 10-m Keck telescope.

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