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Hexagonal Cutting of Primary Mirror Segment

September 4th, 2018

Credit: TMT International Observatory/NAOJ/Canon Inc.

TMT member NAOJ with their industrial partners Canon Inc. and SHIBA R&D CO. Ltd. successfully performed hexagonal cutting of a full size primary mirror segment. Metrology measurements carried out by Coordinate Measurement Machines (CMM) show that critical dimensions of parts including pockets for sensors and actuators, meet TMT stringent requirements.