Koby Smith

TL;DR: In this article, the authors summarized the metrology tools, test setups and processes used to characterize the JWST optical components, including 4D PhaseCam and Leica Absolute Distance Meter.

TL;DR: The 18 flight primary mirrors segments, the secondary mirror, and the tertiary mirror are all advanced in the mirror production process with many segments through the final polishing process, coating process, final assembly, vibration testing, and final acceptance testing.

TL;DR: The details of test setup to do so, the data system used to collect and process the data, and the algorithms to distill the dynamics motions detected are presented and followed by a discussion of the conclusions and potential applications of this measurement technique.

TL;DR: A subset of the Wavefront Sensing and Controls operations for JWST were demonstrated during its recent cryo-vac testing using the flight telescope and instruments, and a functional simulation of the spacecraft and ground system.

TL;DR: In this paper, the Hartmann approach was used for phase retrieval of images created by three sub-apertures of the James Webb Space Telescope (JWST) during pre-test runs.