Webb Telescope (IMAGE) NASA/Goddard Space Flight Center Caption After successfully assembling the entire observatory, technicians and engineers moved on to fully deploy and tension all five layers of its tennis court sized sunshield, which is designed to keep its optics and sensors in the shade and away from interference. Credit NASA/Chris Gunn Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.