Description:
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 an optical telescope and also the largest convex mirror ever produced.
Credit:
European Southern Observatory (ESO).
Editing: Nico Bartmann.
Web and technical support: Mathias André and Raquel Yumi Shida.
Written by: Lauren Fuge, Hannah Dalgleish, and Richard Hook.
Music: Tim Turusov - Saturn Hotline (http://www.turusov.com/).
Footage and photos: ESO, SCHOTT.
Directed by: Nico Bartmann and Richard Hook.
Executive producer: Lars Lindberg Christensen.
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