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How sharp are the images of Webb going to be?

April 26, 2017going images Sharp webb

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How sharp are the images of Webb going to be?

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The sharpness of images is what astronomers call angular resolution. Webb will have an angular resolution of somewhat better than 0.1 arc-seconds at a wavelength of 2 micrometers (one degree = 60 arc-minutes = 3600 arc-seconds). Seeing at a resolution of 0.1 arc-second means that Webb could see details the size of a US penny at a distance of about 24 miles (40 km), or a regulation soccer ball at a distance of 340 miles (550 km).