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Pioneering high contrast science instruments for planet characterization on giant segmented mirror telescopes
N. Jovanovic, O. Guyon, J. Lozi +36
A suite of science instruments is critical to any high contrast imaging facility, as it defines the science capabilities and observing modes available. SCExAO uses a modular approa…
Developing post-coronagraphic, high-resolution spectroscopy for terrestrial planet characterization on ELTs
N. Jovanovic, O. Guyon, T. Kotani +12
Spectroscopic observations are extremely important for determining the composition, structure, and surface gravity of exoplanetary atmospheres. High resolution spectroscopy of the…
Ground-based adaptive optics coronagraphic performance under closed-loop predictive control
Jared R. Males, Olivier Guyon
The discovery of the exoplanet Proxima b highlights the potential for the coming generation of giant segmented mirror telescopes (GSMTs) to characterize terrestrial --- potentially…
Calibration of the island effect: Experimental validation of closed-loop focal plane wavefront control on Subaru/SCExAO
Mamadou N'Diaye, Frantz Martinache, Nemanja Jovanovic +5
Island effect (IE) aberrations are induced by differential pistons, tips, and tilts between neighboring pupil segments on ground-based telescopes, which severely limit the observat…
On-sky closed loop correction of atmospheric dispersion for high-contrast coronagraphy and astrometry
Prashant Pathak, Olivier Guyon, Nemanja Jovanovic +6
Adaptive optic (AO) systems delivering high levels of wavefront correction are now common at observatories. One of the main limitations to image quality after wavefront correction…
Demonstration of broadband contrast at 1.2 /D and greater for the EXCEDE Starlight Suppression System
Dan Sirbu, Sandrine J. Thomas, Ruslan Belikov +8
The EXoplanetary Circumstellar Environments and Disk Explorer (EXCEDE) science mission concept uses a visible-wavelength Phase-Induced Amplitude Apodization (PIAA) coronagraph to e…