How does light from the cosmos reach Webb's instruments?
the secondary mirror
out of the dozens of deployments, this if the one of the last to complete.
struts unfold to place the secondary mirror almost 24 feet from the Primary Mirror.
Struts unfold to place the secondary mirror almost 24 feet from the Primary Mirror.
Engineers offload the weight of the secondary mirror and struts so they deploy as if it was weightless.
The spacecraft bus, while not yet physically attached, commands the move electronically.
The next milestone: Joining the Telescope Element and Spacecraft Element
together into the full observatory.
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