Top left: Excess of emission at 786 nm compared to 527 nm at Mitchell. Top right: Doppler shifted (≈530 km s⁻¹) line to continuum ratio of Fe XIV measured at Alliance. Bottom left: Doppler shifted line to continuum ratio of Fe XI from Mackay. Bottom right: Same as left but for Alliance. The line and continuum data were calibrated using the technique outlined in Section 2.2. The white ring in the middle panels indicates the location of a ghost image in the raw data produced by internal reflections in the optics (see Appendix B).