On the Instrumental Polarisation of NAOS-CONICA

Details On the Instrumental Polarisation of NAOS-CONICA On the Instrumental Polarisation of NAOS-CONICA

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010msngr.142....5w&link_type=abstract

The Messenger, vol. 142, p. 5-7

Computer Science

Scientific paper

As expected for a Nasmyth instrument, NAOS-CONICA shows a significant instrumental polarisation that is strongly dependent on the parallactic angle of the source and can reach up to 4% in the degree of linear polarisation. Detailed modelling of the polarimetric properties of the optical components of NAOS-CONICA using the Stokes/Mueller formalism allows the instrumental polarisation to be corrected with an accuracy of better than 1% in linear polarisation. In addition we propose an observation strategy that is expected to allow instrumental polarisation effects to be corrected to an accuracy of about 0.1%.

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