Getting ready for coating

Technicians at ESO’s Paranal Observatory, Chile, watch a mirror segment of the Extremely Large Telescope (ELT) be carefully lowered into a protective box for coating. This includes silver for reflectivity, and nickel chromium and silicon nitride to improve adhesion and prevent tarnishing. Each of the 798 segments that will make up the ELT’s primary mirror will need to be coated, as well as 133 extras, so that segments can be seamlessly removed for frequent re-coating.

Credit:

ESO/F. Carrasco (CHEPOX)

About the Image

Id:ann24005d
Type:Photographic
Release date:14 March 2024, 14:00
Related announcements:ann24005
Size:6000 x 4000 px

About the Object

Name:Extremely Large Telescope
Type:Unspecified : Technology : Observatory : Telescope
Category:ELT

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