J. Scott Knight

TL;DR: In this article, a suite of processes, algorithms, and software that has been developed to achieve this precise alignment, using images taken from JWST's science instruments during commissioning, is described.

TL;DR: In this paper , the authors characterize the actual science performance of the James Webb Space Telescope (JWST), as determined from the six month commissioning period, with an emphasis on differences from pre-launch expectations.

TL;DR: In this paper, the authors verify the optical alignment of the James Webb Space Telescope (JWST) using the Integrated Telescope Model (ITM), a Matlab/Simulink integrated observatory model which interfaces to CodeV/OSLO/IDL.

TL;DR: In this article, a linear set of equations that describe the multi-field (MF) wavefront errors resulting from a misaligned secondary mirror is presented, and it is shown that inverting these equations yields corrections for the SM alignment that can independently control the field-dependent astigmatism and the focal plane tilt.

TL;DR: For each major step in JWST's wavefront sensing and control, the changes and additions that were needed to turn an initial operations concept into a flight-ready plan with proven tools are explained.