Abstract
EPOL is the imaging polarimeter part of EPICS
(Exoplanet Imaging Camera and Spectrograph)
for the 42-m E-ELT. It is based on sensitive
imaging polarimetry to differentiate between
linearly polarized light from exoplanets and
unpolarized, scattered starlight and to
characterize properties of exoplanet
atmospheres and surfaces that cannot be
determined from intensity observations alone.
EPOL consists of a coronagraph and a dualbeam
polarimeter with a liquid-crystal retarder
to exchange the polarization of the two beams.
The polarimetry thereby increases the contrast
between star and exoplanet by 3 to 5 orders of
magnitude over what the extreme adaptive
optics and the EPOL coronagraph alone can
achieve. EPOL operates between 600 and 900
nm, can select more specific wavelength bands
with filters and has an integral field unit to
obtain linearly polarized spectra of known
exoplanets.
| Original language | English |
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| Publication status | Published - 25 Oct 2010 |
| Event | International conference In the Spirit of Lyot 2010: Direct Detection of Exoplanets and Circumstellar Disks. October 25 - 29, 2010. University of Paris Diderot, Paris, France - Paris Duration: 25 Oct 2010 → 29 Oct 2010 |
Conference
| Conference | International conference In the Spirit of Lyot 2010: Direct Detection of Exoplanets and Circumstellar Disks. October 25 - 29, 2010. University of Paris Diderot, Paris, France |
|---|---|
| City | Paris |
| Period | 25/10/10 → 29/10/10 |