New imaging polarimeter for the Mont-Megantic Observatory

Pierre Bastien; Vincent Ross; Olivier Hernandez

doi:10.1117/12.458900

14 February 2003 New imaging polarimeter for the Mont Megantic Observatory

Pierre Bastien, Vincent Ross, Olivier Hernandez

Proceedings Volume 4843, Polarimetry in Astronomy; (2003) https://doi.org/10.1117/12.458900
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

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.

Citation Download Citation

Pierre Bastien, Vincent Ross, and Olivier Hernandez "New imaging polarimeter for the Mont Megantic Observatory", Proc. SPIE 4843, Polarimetry in Astronomy, (14 February 2003); https://doi.org/10.1117/12.458900

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