Roman coronagraph instrument: engineering overview and status
Ilya Poberezhskiy, Kathryn Heydorff, T. S. Luchik, Feng Zhao, Eric Cady, Gasia Bedrosian, M. M. Colavita, Brandon Creager, Renaud Goullioud, Tyler D. Groff, Amanda Grue, Brian Monacelli, Patrick Morrissey, Joshua Kempenaar, Brian Kern, Matthew E. King, Timothy R. Koch, John Krist, Gary Kuan, Jonathan C. Lam, Dorothy E. Lewis, Fai Mok, David Muliere, B. Nemati, Charley Noecker, Jeffrey M. Oseas, A. J. Eldorado Riggs, Fang Shi, Belinda Shreckengost
Abstract
The Nancy Grace Roman Space Telescope is NASA’s flagship astrophysics mission planned for launch in 2026. The Coronagraph Instrument (CGI) on Roman will demonstrate the technology for direct imaging and spectroscopy of exoplanets around nearby stars. It will work with the 2.4-meter diameter telescope to achieve starlight suppression and point source detection limits that are 2–3 orders of magnitude deeper than previous space-based and groundbased coronagraphs by using active wavefront control with deformable mirrors. CGI has passed its Critical Design Review (CDR) in April of 2021, and System Integration Review (SIR) in June of 2022. We describe the status of CGI’s development and plans for the upcoming integration and testing phase.