How does the James Webb telescope filter out the infrared light from the stars NASA isn't interested in studying?
The James Webb telescope goes to great lengths to shield the sensors from light/infrared radiation of the Sun, Earth, Moon. It’s looking into the inky blackness of earliest space trying to detect the faintest traces of infrared light. So how does it exclude the billions of bright stars/galaxies/supernovas etc. in whatever direction it’s pointing?
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