To keep the Very Large Telescope (VLT) at peak performance, ESO engineers carefully recoat its enormous mirrors.

Polishing a telescope mirror to perfection | Space photo of the day for Oct. 6, 2025

Source: space
Source Link: https://www.space.com/astronomy/polishing-a-telescope-mirror-to-perfection-space-photo-of-the-day-for-oct-6-2025