White-light context. Coronagraph images spanning the STEREO-A interval with wavevector-corrected direction-finding angles overplotted as angular positions (circles: blue 975 kHz, green 1475 kHz, red 1925 kHz). The corrected directions remain near the helmet streamer apex as the system rotates across the visible hemisphere; these points indicate directions on the sky and are not an independent 3D reconstruction, so their projected distance from the occulter is not a direct proxy for heliocentric source height. An animation of this figure is available. It shows the sequence from 2025 September 6 at 11:53:30 to 2025 September 9 at 11:53:30. The real-time duration is 18 s.

(An animation of this figure is available in the online article.)

(An animation of this figure is available.)

The video/animation of this figure is available in the online journal.