Engineering topics
Riggs, A.J.
Publications and source records attributed to Riggs, A.J..
Enabling High-Contrast Imaging of Binary Stars with the Roman Space Telescope Coronagraph Instrument
No abstract provided
WFIRST Coronagraph Flight Performance Modeling
As it has for the past few years, numerical modeling is being used to predict the on-orbit, high-contrast imaging performance of the WFIRST coronagraph, which was recently defined to be solely a technology demonstrator. A consequence has been a realignment of modeling priorities and revised applications of modeling uncertainty factors and margins, which apply to multiple factors such as pointing and wavefront jitter, thermally-induced deformations, polarization, and aberration sensitivities. At the same time, the models have increased in fidelity as additional parameters have been added, such as time-dependent pupil shear and mid-spatial-frequency deformations of the primary and secondary mirrors, detector effects, and reaction-wheel-speed-dependent pointing and wavefront jitter.
Updated WFIRST CGI SPC design for disk science: discussion on minimum SP feature size
UNKNOWN