The effect of spatial smearing on solar Doppler measurements |
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| Authors: | B N Andersen |
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| Institution: | (1) Institute of Theoretical Astrophysics, University of Oslo, Oslo, Norway |
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| Abstract: | A general mathematical formulation of the effect of spatial smearing on solar velocity measurements is presented. The variations of the straylight induced error with wavelength and line parameters are discussed. The spatial and time dependence of the error will influence the measurement of solar limb effect and may introduce fictitious large scale velocity fields with amplitudes of the order of a few m/s.Present address: Space Science Department of ESA, ESTEC, Noordwijk, The Netherlands. |
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