Panchromatic reflectance spectra of 3I/ATLAS. All epochs show a clear rising continuum in the optical, peaking around 1.0 μm, indicative of a dusty coma. Between the second and third epochs, strong Ni and CN emission lines appear blueward of ∼0.4 μm, with Fe emission lines emerging as 3I/ATLAS made its perihelion passage. All spectra are normalized to reflectance at 0.5 μm, and the telluric regions are denoted by the vertical shaded regions. A zoomed-in view on the cometary emission region 0.33–0.5 μm is shown in Figure 2.

(The data used to create this figure are available in the online article.)

(The data used to create this figure are available.)