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Proceedings Paper

The LUVOIR Extreme Coronagraph for Living Planetary Systems (ECLIPS) II. Performance evaluation, aberration sensitivity analysis and exoplanet detection simulations
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Paper Abstract

Future space missions such as the Large UV-Optical-Infrared Surveyor (LUVOIR) and the Habitable Exoplanet Observatory (HabEx) require coronagraphs with active wavefront control to suppress starlight to discover and characterize habitable exoplanets. The Extreme Coronagraph for Living Planetary Systems (ECLIPS) is the coronagraph instrument on the LUVOIR Surveyor mission concept, an 8{15m segmented telescope. ECLIPS is split into three channels: UV (200 to 400 nm), optical (400 nm to 850 nm), and NIR (850 nm to 2.0 microns), with each channel equipped with two deformable mirrors for wavefront control, a suite of coronagraph masks, a low-order/out-of-band wavefront sensor, and separate science imagers and spectrographs. The Apodized Pupil Lyot Coronagraph (APLC) and the Vector Vortex Coronagraph (VVC) are the baselined mask technologies for ECLIPS to enable the required 10-10 contrast for observations in the habitable zones of nearby stars. Their performance depends on active wavefront sensing and control, as well as metrology subsystems to compensate for aberrations induced by segment errors (piston and tip/tilt, among others), secondary mirror misalignment, and global low-order wavefront errors. Here we present the latest results of the simulation of these effects for the two technologies and discuss the achieved contrast for exoplanet detection and characterization after closed-loop wavefront estimation and control algorithms have been applied. Finally, we show simulated observations using high-fidelity spatial and spectral input models of complete planetary systems generated with the Haystacks code framework.

Paper Details

Date Published: 9 September 2019
PDF: 16 pages
Proc. SPIE 11117, Techniques and Instrumentation for Detection of Exoplanets IX, 1111702 (9 September 2019); doi: 10.1117/12.2530356
Show Author Affiliations
Roser Juanola-Parramon, NASA Goddard Space Flight Ctr. (United States)
Neil T. Zimmerman, NASA Goddard Space Flight Ctr. (United States)
Laurent Pueyo, Space Telescope Science Institute (United States)
Matthew Bolcar, NASA Goddard Space Flight Ctr. (United States)
Garreth Ruane, Jet Propulsion Lab. (United States)
John Krist, Jet Propulsion Lab. (United States)
Tyler Groff, NASA Goddard Space Flight Ctr. (United States)

Published in SPIE Proceedings Vol. 11117:
Techniques and Instrumentation for Detection of Exoplanets IX
Stuart B. Shaklan, Editor(s)

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