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WEBB'S EIGHT-POINTED STARS Like most reflecting telescopes, the Webb’s primary mirror and struts define its diffraction spikes. Webb has three struts, with two angled at 150 degrees from its vertical strut, and each of the hexagonal segments in its primary mirror contain edges for light to diffract against. Webb's struts are designed so that their diffraction spikes partially overlap with those created by the mirrors. Both of these lead to Webb's complex eight-pointed star pattern.

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