A Video-Polarimeter For Metrology, Field Inspection And Telescopic Observations

Audouin Dollfus; Thierry Fauconnier

doi:10.1117/12.961506

26 September 1989 A Video-Polarimeter For Metrology, Field Inspection And Telescopic Observations

Audouin Dollfus, Thierry Fauconnier

Proceedings Volume 1130, New Technologies for Astronomy; (1989) https://doi.org/10.1117/12.961506
Event: 1989 International Congress on Optical Science and Engineering, 1989, Paris, France

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.

Citation Download Citation

Audouin Dollfus and Thierry Fauconnier "A Video-Polarimeter For Metrology, Field Inspection And Telescopic Observations", Proc. SPIE 1130, New Technologies for Astronomy, (26 September 1989); https://doi.org/10.1117/12.961506

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