Inset into the position of the occulter is a map of the Sun's magnetic field. The 27-day solar rotation is easily visible, both in the magnetic map and in the coronal structures. A bright structure at one limb can be seen about 14 days later on the other limb. At times very sudden eruptions propagate outward and may be seen later in the C2 and C3 coronagraphs. At this minimum phase in the solar activity cycle, the green line emission is concentrated at lower latitudes and doesn't appear above the North and South poles of the Sun where the coronal holes are.
Coronal holes are regions of reduced emission, reduced density, and increased speed.
Occasional flashes of emission above the poles can be seen.