Core throughput within a photometric aperture of radius 0.7λ/D for wavelengths ranging from 500–1000 nm in steps of Δλ = 50 nm, shown in units of angular resolution (left panel) and milliarcseconds (right panel). These are shown overlaid for the off-axis aperture in blue and on-axis aperture in purple. Baseline HWO apertures are shown in Figure 8. Outside of the inner working angle, the core throughput is marginally lower for the on-axis aperture at 66% as compared to the off-axis aperture at 68%. Inside the IWA, both apertures have the same throughput. The starshade throughput is generally not highly dependent on wavelength; however, angular resolution worsens in the NIR. In the NIR, the starshade is able to image close-in planets at 2λ/D. We note the amplification of a source amplitude at the IWA, also seen in B. S. Gaudi et al. (2020), S. Shaklan et al. (2023), and C. Aime et al. (2024).