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.
Credit:
Safran
About the Image
Id: | 20230831_162758 |
Type: | Photographic |
Release date: | 27 November 2023, 14:21 |
Size: | 4470 x 3353 px |
About the Object
Name: | Extremely Large Telescope |
Type: | Unspecified : Technology : Observatory : Telescope |
Category: | ELT |
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