ESO uses Canary's Trend Link to help ensure that the mirrors used in their telescopes are recoated properly.
View a video on ESO's (European Southern Observatory) website on how a telescope mirror is recoated.

ESOCast 15: Recoating a Giant VLT Mirror (produced by ESO)

Every night, all year round, the ESO Very Large Telescope, or VLT, opens its four giant eyes to scrutinise the beautiful southern skies. Each eye is a huge mirror, 8.2 metres in diameter, that gathers the light of the night sky, and reflects it into optical systems that form ultra-sharp images of the Universe. But keeping the VLT´s eyes clear requires each mirror to be cleaned and recoated occasionally, a delicate and complex procedure.

Read about how Canary's InfoLink is being used to monitor the recoating process.