Coating the Extremely Large Telescope mirrors with silver | ELT Updates

ESO’s Extremely Large Telescope (ELT) will have a 39-m wide primary mirror, comprised of 798 hexagonal segments working together with nanometric accuracy. The segments are coated with a thin layer of silver to reflect the light from the cosmos. But how does the coating process work? In this video we take you on a behind-the-scenes tour of the ELT’s Technical Facility in Chile where this process takes place.

Learn more about the ELT: https://elt.eso.org/

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Credits:
ESO
Directed by: Angelos Tsaousis and Martin Wallner.
Editing: Angelos Tsaousis.
Written by: Barbara Ferreira.
Narration: Graeme Mackenzie/voicearchive
Music: Jon Kennedy – Inner Resting, Andrea Michele Vincenti – New Visions.
Web and technical support: Gurvan Bazin and Raquel Yumi Shida
Footage and photos: ESO / Luis Calçada, Angelos Tsaousis, Jose Porte,
Max Nadjar, Boris Häußler, Herbert Zodet, Juan Carlos González Herrera,ACe/Cimolai.

More information and download options: https://www.eso.org/public/videos/elt...