Without them, the ELT simply would not function! We are talking about the ELT's giant Pre-Focal Stations. Currently undergoing final tests, they will guide the light collected by the telescope to the scientific instruments that will analyse it. More: www.youtube.com/watch?v=OWCB... 🔭 🧪
youtube.comThe Extremely Large Telescope can't work without these key systemsYouTube video by European Southern Observatory (ESO)
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