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Grinding the ELT’s M3 mirror
The Extremely Large Telescope’s (ELT's) tertiary mirror, M3, is four metres in diameter and weighs in at a whopping three tonnes. Here, the M3 mirror is in the grinding phase at Safran Reosc in France, which is designed to improve the surface quality to an accuracy of a few micrometres. Following this stage, the mirror will be polished to an accuracy of a few nanometres.
Crédit:
Safran
À propos de l'image
| Identification: | 20230831_162758 |
| Type: | Photographique |
| Date de publication: | 27 novembre 2023 14:21 |
| Taille: | 4470 x 3353 px |
À propos de l'objet
| Nom: | Extremely Large Telescope |
| Type: | Unspecified : Technology : Observatory : Telescope |
| Catégorie: | ELT |
