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Proceedings Paper

New imaging polarimeter for the Mont-Megantic Observatory
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Paper Abstract

An imaging polarimeter for the visible has been built for the mont Megantic Observatory. It uses a new design with a Foster prism which allows to obtain the two orthogonal beams of polarized light onto the detector at the same time, thus alleviating calibration problems associated with variations in the sky transparency during the observations. The field of view is 2.4 arc minutes at the f/15 focus of the telescope. A rotating achromatic half-wave plate is used to get all the linear polarization components and eliminate systematic calibration effects. Circularly polarized images can also be obtained by substituting a quarter-wave plate for the rotating half-wave plate. A user-friendly software for carrying out the data reduction has been developed.

Paper Details

Date Published: 14 February 2003
PDF: 7 pages
Proc. SPIE 4843, Polarimetry in Astronomy, (14 February 2003); doi: 10.1117/12.458900
Show Author Affiliations
Pierre Bastien, Univ. de Montreal (Canada)
Observatoire du mont Megantic (Canada)
Vincent Ross, Univ. de Montreal (Canada)
Observatoire du mont Megantic (Canada)
Olivier Hernandez, Univ. de Montreal (Canada)
Observatoire du mont Megantic (Canada)

Published in SPIE Proceedings Vol. 4843:
Polarimetry in Astronomy
Silvano Fineschi, Editor(s)

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