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Proceedings Paper

A Video-Polarimeter For Metrology, Field Inspection And Telescopic Observations
Author(s): Audouin Dollfus; Thierry Fauconnier
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Paper Abstract

A Video-Polarimeter enables imaging of a field exclusively with the light which is polarized. A polarization selector isolates at will the six Stokes parameters. A CCD detector array feeds the images on a video system and on a memory. An interactive image processor computes combinations of these images to produce final images reproducing the scene in degree of circular polarization, in degree of linear polarization and in the azimuth of the linear polarization. Application for bidimensional polarization measurements in laboratory are illustrated. The Video-Polarimeter allows also open air field inspection and enables detection of artificial objects added in the field of view. Through a telescope, the instrument produces polarization images of astrophysical objects such as planetary surfaces. Adapted to a monochromatic solar telescope, the design allows analysis of the photospheric active centers by producing magnetic, velocity and temperature gradient images.

Paper Details

Date Published: 26 September 1989
PDF: 8 pages
Proc. SPIE 1130, New Technologies for Astronomy, (26 September 1989); doi: 10.1117/12.961506
Show Author Affiliations
Audouin Dollfus, Observatoire de Paris (France)
Thierry Fauconnier, Observatoire de Paris (France)

Published in SPIE Proceedings Vol. 1130:
New Technologies for Astronomy
Jean-Pierre Swings, Editor(s)

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