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Fig. 13.

image

Map of the worst contrast through an off-axis fiber over a 10% bandwidth as a function of tip-tilt error upstream of the microlens array. This shows that the coronagraph is reasonably stable against tip-tilt, allowing for a ∼0.15λ/D tip-tilt error until the contrast drops to 10−4. The contour labels indicate log10(ηs/ηp).

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