Based on a proven technology for deploying large microwave antennae, the TRW design uses six hexagonal mirrors (10 feet or 3 meters between edges), which are stacked above a seventh central hexagonal mirror and are deployed and locked once the spacecraft reaches the L2 orbit. Like the Ball design, the TRW telescope can point to any target over more than half of the sky. The TRW sunshade design features many shields that are deployed with masts and wires.
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