CaltechAUTHORS
Published July 7, 2008 | Version Submitted + Published
Book Section - Chapter Open

Prototyping coronagraphs for exoplanet characterization with SPHERE

Creators

  • 1. ROR icon Université Côte d'Azur
  • 2. ROR icon Laboratoire d'Astrophysique de Marseille
  • 3. ROR icon Jet Propulsion Lab

Contributors

Abstract

The detection and characterization of extrasolar planets with SPHERE (Spectro Polarimetric High contrast Exoplanet REsearch) is challenging and in particular relies on the ability of a coronagraph to attenuate the diffracted starlight. SPHERE includes 3 instruments, 2 of which can be operated simultaneously in the near IR from 0.95 to 1.8 microns. This requirements is extremely critical for coronagraphy. This paper briefly introduces the concepts of 2 coronagraphs, the Half-Wave Plate Four Quadrant Phase Masks and the Apodized Pupil Lyot Coronagraph, prototyped within the SPHERE consortium by LESIA (Observatory of Paris) and FIZEAU (University of Nice) respectively. Then, we present the measurements of contrast and sensitivity analysis. The comparison with technical specifications allows to validate the technology for manufacturing these coronagraphs.

Additional Information

© 2008 Society of Photo-Optical Instrumentation Engineers (SPIE).

Attached Files

Published - 396493.pdf

Submitted - 0807.0694.pdf

Files

0807.0694.pdf

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Additional details

Identifiers

Eprint ID
57839
Resolver ID
CaltechAUTHORS:20150527-065433063

Related works

Describes
http://arxiv.org/abs/0807.0694 (URL)

Dates

Created
2015-05-27
Created from EPrint's datestamp field
Updated
2021-11-10
Created from EPrint's last_modified field

Caltech Custom Metadata

Series Name
Proceedings of SPIE
Series Volume or Issue Number
7015