Engineer Handling the Sunshield Membrane (IMAGE) NASA/Goddard Space Flight Center Caption This is a photo of an engineer handling the Webb telescope sunshield membrane on the 1/3 scale model. The five-layer sunshield consists of thin membranes made from a polymer-based film and supporting equipment such as spreader bars, booms, cabling, and containment shells. Credit Northrop Grumman 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.