NASA Image Round of Testing Completed on Webb Telescope Flight Mirrors

[Bok]

This July 11, 2015 photograph captures one of the final, if not the final, James Webb Space Telescope flight primary mirror segments to be processed through NASA Goddard Space Flight Center's Calibration, Integration and Alignment Facility (CIAF).

More... (http://www.nasa.gov/image-feature/round-of-testing-completed-on-webb-telescope-flight-mirrors)