Polarization calibration of the solar optical telescope onboard Hinode
The Solar Optical Telescope (SOT) onboard Hinode aims to obtain vector magnetic fields on the Sun through precise spectropolarimetry of solar spectral lines with a spatial resolution of 0.2 - 0.3 arcsec. A photometric accuracy of 10⁻³ is achieved and, after the polarization calibration, any artificial polarization from crosstalk among Stokes parameters is required to be suppressed below the level of the statistical noise over the SOT's field of view. This goal was achieved by the highly optimized design of the SOT as a polarimeter, extensive analyses and testing of optical elements, and an end-to-end calibration test of the entire system. In this paper we review both the approach adopted to realize the high-precision polarimeter of the SOT and its final polarization characteristics.
document
https://n2t.org/ark:/85065/d7wq03z7
eng
geoscientificInformation
Text
publication
2016-01-01T00:00:00Z
publication
2008-06-01T00:00:00Z
An edited version of this paper was published by Springer. Copyright Springer 2008 Science+Business Media B.V.
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