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MCQIntermediateObservational Astronomy & Telescopes
USAAAO — 2022 First Round
Question 6
Consider a f/9 telescope with focal length f = 1.0 m that operates at visible wavelength λ = 5000 Å. What is the farthest distance at which an open cluster of radius RC = 4.1 pc can be resolved by this telescope?
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Source
USAAAO 2022 First Round. Question text, choices, and answer were transcribed from the official USAAAO exam and solutions PDFs.