7 papers · 1 filter
The Roman Coronagraph Community Participation Program: data reduction pipeline design and implementation
Jason J. Wang, Maxwell A. Millar-Blanchaer, Marie Ygouf +39
The Roman Space Telescope Coronagraph Instrument will demonstrate a series of technologies and techniques to enable the direct detection of reflected-light planets with space-based…
Polarization aberration modeling of internal occulters for coronagraphs
Emory L. Jenkins, A J Eldorado Riggs, Ewan S. Douglas +3
The Habitable Worlds Observatory (HWO) is a flagship mission concept proposing to characterize earth-like exoplanets at high contrast with a coronagraph instrument. The most in-dep…
High-order wavefront sensing and control for the Roman Coronagraph Instrument (CGI): architecture and measured performance
Eric Cady, Nicholas Bowman, Alexandra Z. Greenbaum +10
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 ins…
Revisiting the Borde-Traub focal plane wavefront estimation technique for exoplanet direct imaging
Axel Potier, A J Eldorado Riggs, Garreth Ruane +8
Direct imaging of exoplanets relies on complex wavefront sensing and control architectures. In addition to fast adaptive optics systems, most of the future high-contrast imaging in…
Comparative laboratory study of electric field conjugation algorithms
Niyati Desai, Axel Potier, Susan F. Redmond +5
Future space telescope coronagraph instruments hinge on the integration of high-performance masks and precise wavefront sensing and control techniques to create dark holes essentia…
Benefits of adding radial phase dimples on scalar coronagraph phase masks
Niyati Desai, Dimitri Mawet, Eugene Serabyn +4
Current scalar coronagraph focal plane mask designs are performance-limited by chromaticity. We investigate the effects of adding central Roddier and dual zone phase dimples to sca…