May 19, 2022
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Safran Reosc contract for E-ELT telescope
Safran Reosc, a subsidiary of Safran Electronics & Defense, has signed a contract with ESO, the European Southern Observatory, to polish, measure and test the M2 mirror, the secondary optics on the European Extremely Large Telescope (E-ELT), which will be the world’s most powerful telescope. Safran Reosc will also be responsible for the development and construction of the high-precision optical test bench, designed to measure the M2 mirror’s optical quality throughout the polishing process. The M2 mirror, a high-performance optical part, will be processed at Safran Reosc’s plant in Saint-Pierre du Perray, for delivery in 2022. It will then be mounted in cell by ESO. Safran Reosc’s latest success on the E-ELT follows its contract win in 2015 to produce segments for the telescope’s M4 adaptive mirror. Measuring 4.2 meters in diameter, the M2 will be the largest telescope secondary mirror ever built. It will be made of a vitro-ceramic material, and will be in the shape of a circular, convex meniscus 100 millimeters thick. The mirror polishing process, one of Safran Reosc’s specialties, will ensure outstanding quality.