Secondary Mirror of ELT Successfully Cast

On: May 22, 2017

Secondary Mirror of ELT Successfully Cast

The casting of the secondary mirror blank for ESO’s Extremely Large Telescope (ELT) has been completed by SCHOTT at Mainz, Germany. The completed mirror will be 4.2 metres in diameter and weigh 3.5 tonnes. It will be the largest secondary mirror ever employed on a telescope and also the largest convex mirror ever produced.
ESO News Feed
Go to Source

Previous Post: Transporting and opening the mould containing the ELT secondary mirror blank

Next Post: Astronomy Cast Ep. 447: Animals in Space Pt. 3: Dogs, Monkeys and More