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Improved method for calibrating filter vector magnetographs

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Abstract

We have developed a method to improve present techniques for calibrating linear and circular polarization signals in terms of the vector magnetic field from observations with a filter vector magnetograph. The method substantially reduces inaccuracies in deriving the inclination of the field from theoretical calibrations for inclination angles in the range 30°–60°. We outline the method and demonstrate its improved accuracy in applications to a model magnetic field and to actual magnetograph observations. We also demonstrate how the method affects the calculation of derived parameters using the example of the vertical electric current density.

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Authors and Affiliations

  1. Space Sciences Laboratory, ES82, NASA Marshall Space Flight Center, 35812, Huntsville, AL, USA

    M. J. Hagyard

  2. Department of Mathematics and Science, Centre College, 40422, Danville, KY, USA

    J. I. Kineke

Authors
  1. M. J. Hagyard
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  2. J. I. Kineke
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Hagyard, M.J., Kineke, J.I. Improved method for calibrating filter vector magnetographs. Sol Phys 158, 11–28 (1995). https://doi.org/10.1007/BF00680832

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  • DOI: https://doi.org/10.1007/BF00680832

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