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Fig. 4.


Sample images from four different datasets with large IRIS rasters. Each row shows five different diagnostics. The first two images in each row show the channel pairs that were used for IRIS and SST co-alignment and the area outlined by the white rectangle marks the region used for cross-correlation to determine offsets. The dashed red line in the second image marks the location of the IRIS slit in the SJI image to the left. The dashed purple lines mark the area covered by the IRIS raster. The three right-most images show spectroheliograms constructed from the raster data cubes: at the nominal line core wavelengths of the Mg II k and Hα line cores, and a blue wing Fe I 6302 Å Stokes V map at −0.048 Å. The SST images are down-scaled to the IRIS plate scale.

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