Deployment test of Webb's secondary mirror
![](https://cdn.sci.esa.int/documents/34594/35357/1567214180195-Webb_secondary_mirror_deployed_3_625.jpg)
Date: 19 August 2019
Satellite: JWST
Depicts: Secondary mirror
Copyright: NASA/Chris Gunn
Following a successful deployment test of NASA Webb’s secondary mirror, technicians and engineers visually inspect the support structure that holds it in place.
Last Update: 1 September 2019