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Table 2.

Compilation of considered parameters used to compare our result of from GRIS to the previous results from SP/Hinode and SDO/HMI data.

Parameter GRIS SP/Hinode SDO/HMI
λ [Å] 15648/15662 6301/6302 6173
spec. res. 113 000 150 000 44000
spat. res. [″] ∼0.4 ∼0.64 ∼1.0
res. straylight Yes
Δz [km] ∼65 ∼65
[Gauss] (1787 ± 100) (1692 ± 15)

Notes. The table lists: line wavelength, spectral resolution, spatial resolution, straylight (residuals after correction), formation height difference (relative to GRIS), and the value calculated in the respective studies. References to the displayed values are given in the text (Sect. 4.2).

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