The Lyot Project: Status and Results

Details The Lyot Project: Status and Results The Lyot Project: Status and Results

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007lyot.confe..21s&link_type=abstract

Proceedings of the conference In the Spirit of Bernard Lyot: The Direct Detection of Planets and Circumstellar Disks in the 21s

Physics

Optics

Scientific paper

The Lyot Project near-IR coronagraph, operating behind the AEOS 3.6m 941-channel adaptive optics system, has opened up new search areas in the mass-separation parameter space of faint companions to nearby stars brighter than V=7. As the first so-called extreme AO system on sky, often operating at a 90% Strehl ratio at H with an upgraded AEOS AO system, its use has uncovered some hitherto unforeeseen difficulties in the search for faint companions. The coronagraph possesses a simultaneous dual-polarization mode and a novel technique for precision relative astrometry and photometry. We have also developed a refinement of the angular differential imaging technique in order to suppress the static and quasi-static speckles that limit our dynamic range. We are about to explore newer coronagraph designs, and place an Integral Field Unit spectrograph behind the coronagraph.

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