Watching the opening of the ELT M2 mould

Roberto Tamai (Programme Manager of the ELT), Marc Cayrel (Project Manager ELT Optomechanics), and Thomas Westerhoff (Director Strategic Marketing ZERODUR®, SCHOTT AG Advanced Optics) watch the opening of the ELT secondary mirror blank mould. It contains the still very hot ZERODUR® glass at first annealing.