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Final A&T Stages of the Gemini Planet Finder
M. Hartung, B. Macintosh, L. Poyneer +16
The Gemini Planet Imager (GPI) is currently in its final Acceptance & Testing stages. GPI is an XAO system based on a tweeter & woofer architecture (43 & 9 actuators respectively a…
Experimental study of a low-order wavefront sensor for a high-contrast coronagraphic imager at 1.2 lambda/D
Julien Lozi, Ruslan Belikov, Glenn Schneider +4
High-contrast imaging will be a challenge for future ELTs, because their vibrations create low-order aberrations - mostly tip/tilt - that reduce coronagraphic performances at 1.2 l…
Experimental study of a low-order wavefront sensor for the high-contrast coronagraphic imager EXCEDE
Julien Lozi, Ruslan Belikov, Glenn Schneider +4
The mission EXCEDE (EXoplanetary Circumstellar Environments and Disk Explorer), selected by NASA for technology development, is designed to study the formation, evolution and archi…
Computer vision applications for coronagraphic optical alignment and image processing
Dmitry Savransky, Sandrine J. Thomas, Lisa A. Poyneer +1
Modern coronagraphic systems require very precise alignment between optical components and can benefit greatly from automated image processing. We discuss three techniques commonly…