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The James Webb Space Telescope (JWST) will be launched in 2018. With a mirror of 6.5 m in diameter, it is meant to be the new optical telescope after...

The James Webb Space Telescope (JWST) will be launched in 2018. With a mirror of 6.5 m in diameter,it is meant to be the new optical telescope after HST, whose mirror is 2.40 m in diameter. Astronomers arealso building a new ground based telescope with 30 m diameter (the thirty meter telescope, or TMT).a) compare the ability to collect light of the HST, JWST and TMT telescopes. b) How does the diraction limit of HST compares with the one of JWST? c) What is the physical size of the smallest detail that JWST can see on Earth, if its resolution is 0.05arc seconds? (JWST will be sent 1.6 M km from Earth)

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