Tootfinder

High-order wavefront sensing and control for the Roman Coronagraph Instrument (CGI): architecture and measured performance
Eric Cady, Nicholas Bowman, Alexandra Z. Greenbaum, James G. Ingalls, Brian Kern, John Krist, David Marx, Ilya Poberezhskiy, A J Eldorado Riggs, Garreth Ruane, Byoung-Joon Seo, Fang Shi, Hanying Zhou
https://arxiv.org/…

High-order wavefront sensing and control for the Roman Coronagraph Instrument (CGI): architecture and measured performance
The Nancy Grace Roman Space Telescope (``Roman'') is a 2.4m space telescope scheduled for a 2026 launch. The Coronagraph Instrument (CGI) on Roman is a technology-demonstration instrument with a coronagraph and, for the first time in space, deformable mirrors and active wavefront control. This paper walks through the algorithmic and system-level architecture of the HOWFSC implementation for CGI, including the use of ground-in-the-loop (GITL) operations to support computationally-expensive opera…