Upper: spatial profiles of comeasured H₂O (OH^*, blue), C₂H₆ (red), and CH₄ (purple) emissions and continuum (dashed) in E3 from the Lp1 setting, with traces and labels as in Figure 5. The slit was oriented perpendicular to the Sun–comet line (first integration, UT 07:55–08:40). Middle: spatial profiles of comeasured H₂O (OH^*), C₂H₆, and CH₄ emissions and continuum in E3 with the slit oriented along the projected Sun–comet line. Lower: spatial profiles of comeasured H₂O (OH^*), C₂H₆, and CH₄ emissions and continuum in E3 with the slit oriented perpendicular to the projected Sun–comet line (third integration, UT 09:39–10:15).