Testing the main mirror of NASA's James Webb Space Telescope

Before going into space the probes are subjected to rigorous tests and cleaning, such as could be vibrations and sounds tests to make sure they can withstand the violent launches. In the case of NASA's James Webb Space Telescope (JWST) of 6.5 meters there have been a launch simulation test with measurements run before and after the trial to make sure that the precise optics and the shape of the mirror are not compromised during the real launch. 

It is very important to care for the mirror, the telescope is draped over with the "clean tent" which protects its surface from dust and dirt when engineers at NASA's Goddard Space Flight Center in Greenbelt, Maryland transport the next generation space telescope out of the relatively dust-free cleanroom and into the shirtsleeve environment of the vibration and acoustics testing areas. 

In two years from now, a rocket will be the transporter that carries the Webb into space so it can orbit at mora than one and a half million kilometers from Earth and peer back over 13.5 billion years to see the first stars and galaxies forming out of the darkness of the early universe.

Sources: NASA, James Web Telescope