Rubin Observatory's 8.4-meter mirror is coated

Rubin Observatory’s 8.4-meter combined primary/tertiary mirror was coated with protected silver in April 2024. The reflective coating was applied using the observatory’s onsite coating chamber, which will also be used to re-coat the mirror as necessary during Rubin’s 10-year Legacy Survey of Space and Time. This video shows the process of moving the glass into the coating chamber, applying the four coating layers (nickel-chromium, silver, nickel-chromium, and silicon nitride), and revealing the mirror.
La versión en español: • El espejo de 8,4 metro...
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Credit: Rubin Observatory/NSF/AURA/T. Vičuna/S. Deppe
Musics: Studio Crossbred