Vector Vortex Coronagraph technology developments for space-based and ground-based telescopes: status update, and recent test results

Details Vector Vortex Coronagraph technology developments for space-based and ground-based telescopes: status update, and recent test results Vector Vortex Coronagraph technology developments for space-based and ground-based telescopes: status update, and recent test results

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010lyot.confr..73m&link_type=abstract

Proceedings of the conference In the Spirit of Lyot 2010: Direct Detection of Exoplanets and Circumstellar Disks. October 25 -

Computer Science

Performance

Scientific paper

JPL has been incubating the vector vortex coronagraph (VVC) for 3 years, and took it from a theoretical concept to a fully functional device available for immediate use behind existing telescopes. We chose to exploit the liquid crystal polymer (LCP) technology to render the VVC phase ramp, successfully so far. After reaching a series of important milestones, such as 1e-7 raw contrasts and the imaging of exoplanets from the ground, we are now working on pushing the envelope of the LCP technology to meet specific needs for future large ground-based telescopes and small space-based telescopes, respectively. Those needs include better contrast performance, and achromaticity, as well as immunity against central obscuration and low-order aberrations. I will report on the status of those developments and up-to-date lab results in the near-infrared and visible on JPL's high contrast imaging testbeds.

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