Left panel: relative throughput on a linear scale as function of relative shift with respect to the microlens center. The red points are the measurements with errorbars due to random errors. The green line shows the model of this SCAR design. Right panel: throughput on a logarithmic scale. The null is uneven between left and right and not as deep as designed. This is suspected to be caused by 10 nm rms residual low-order aberrations. The blue line shows the amount of light thatfalls on the microlens with a clear aperture and without SCAR. This is comparable to the contrast curve for normal imaging or using a multi-mode fiber. The orange line shows the normalized throughput with a unobstructed aperture and a SMF. The SMF shows a gain compared to the MMF.