Webb Optical qualification bench

Project background

In December 2021, the James Webb Space Telescope (JWST) will be launched and succeed to Hubble.

This next-generation telescope is an international collaboration led by the American NASA, the European Space Agency ESA, and the Canadian Space Agency CSA.

Many innovating techniques are integrated in order to provide great pictures with sensitivity 100 times better than the former space telescopes.


The astrophysical branch of CEA (the French Atomic Energy Commission) wants to test CCD sensors of the optical instrument MIRIM (Mid Infra Red IMager) to guarantee the high resolution of the images taken by the telescope.

They requested Symétrie’s expertise for the optical qualification bench, which will simultaneously adjust the CCD sensors position and the light source.

Project specifications

Two positioning systems: a manual one for the cryostat containing MIRIM imager, a BREVA hexapod for the optical source
High accuracy positioning: 1 µm


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