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Surrogate Mirror 

The LSST secondary mirror (M2) system has completed another big milestone, with successful demonstration of closed-loop mirror control. The Harris team accomplished this using the aluminum surrogate mirror integrated into the cell assembly.  Meanwhile, the mirror substrate is being prepared for its “first light optical test” in July at Harris in Rochester, NY, with the successful bonding of all actuator pads.

LSST Project / NSF / AURA
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