Spectral extraction of a companion with T_eff = 1400 K and log g = 5.0 simulated at 0.3′′ from a G0 star at 10 pc (contrast of 10.6 mag) using the LSC and ALSC coronagraphs. The plot shows input planet spectrum (black, plain), and the extracted planet spectrum from data simulated with the LSC (blue, dash-dotted) and the ALSC (orange, dashed). The restoration factor ϵ has a lower value with the ALSC, denoting a better restoration of the planet spectrum.