Recent Progress in Imaging Polarimetry

Details Recent Progress in Imaging Polarimetry Recent Progress in Imaging Polarimetry

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996soph..164..243k&link_type=abstract

Solar Physics, Volume 164, Issue 1-2, pp. 243-252

Physics

18

Polarimetry, Spectroscopy, Array Detectors

Scientific paper

Recent instrumental developments in imaging polarimetry allow array detectors to reach a polarimetric sensitivity of 1 × 10-4 of the intensity. New instrumental effects appear at these levels of sensitivity and generate spurious polarization signals with amplitudes of up to 5 × 10-4. Here I discuss these effects and present methods to avoid them. Polarized spectra with an rms noise of 6 × 10-6 may then be obtained. Furthermore a method is brought to the reader's attention that allows polarization measurements at the 1 × 10-4 level with regular array detectors, e.g. in the near-infrared.

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