Image Details
Caption: Figure 14.
Left: key components of the focal plate structure include the steel FPD and aluminum FPD Ring, FPR, and petals. The FPD Ring is permanently bolted to the FPD via 40 flexural tabs, which accommodate the differential thermal expansion between the dissimilar metals of the Corrector Barrel and the Focal Plate. Right: FPD and FPR during alignment on a coordinate measuring machine.
© 2022. The Author(s). Published by the American Astronomical Society.