eso9309 — Організаційний реліз
Schott Delivers First 8.2 Metre VLT Mirror Blank to ESO
29 червня 1993 р.: On June 25, 1993, Schott Glaswerke (Mainz, Germany) officially handed over to ESO the largest mirror blank ever made. Weighing 22,000 kilograms and with a diameter of 8.2 metres, the blank has a thickness of only 177 millimetres.