FIGURE 4: A six-hour summed image of the outer corona, unwrapped. At left: normal resolution; at right: smoothed with the averaging kernel at the top of the image. The pattern at the top of the left panel is compression noise generated in the LASCO on-board processing. The diagonal line at upper right of both images is the same halo CME as in Figure 2. There are an accumulated 575 seconds of exposure time in the images.

As with Figure 3, the brightness scale is logarithmic. The logarithm was applied after all the other steps (including averaging).

To the trusting eye, the brightest plumes appear to extend all the way to 30 R0 in the left hand image. They are interfered with by the CME.

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