2D a) and azymutal average b) of the PSF of the optimal apodizer designed for a 10% central obscuration, 1% thick spiders, and a charge 4 vortex. In the azymutal average, the red dot-dashed line denotes the highest spatial frequency captured by the mask at λ = 1.1λ₀, the blue dashed line does the same λ = 0.9λ₀, and the dotted green line does it at λ = λ₀.