Synthetic observation of the KHI at 8.25 μm, with observational angle β = 128° and α = 51° (cases F and H). Two different times are shown, left: t = 0.0084, right: t = 0.01 or 8.21 × 10⁴ and 9.78 × 10⁴ year, respectively). In comparison to the images at β = 90°, the features of the KHI are more pronounced and clearly distinguishable from the background. A linear scale is used for the intensity of the images.