Irradiance spectrum of Klio obtained with NIRSpec using the three grating-filter combinations (in different shades of blue) shown in Table 2. The irradiance spectrum of the P330E star is shown in red, scaled to fit Klio’s spectrum in the 2.2-2.6 μm region (zoomed region in the centre of the panel). Note that above ~3.3 μm, Klio’s spectrum becomes significantly brighter than that of P330E, indicating that thermal emission starts to dominate over reflected light.