Phases reconstructed with COFFEE in direct (non-coronagraphic) configuration, in radians: (a) when the Iris-AO is flattened (this map is also used as our reference phase), (b) when a 188 nm piston is applied on the central segment (open loop), (c) when a 0.2 mrad tip wavefront is applied on the central segment. (d), (e), and (f) corresponds to respectively (a), (b), and (c) after subtraction of the reference phase (phase estimated by COFFEE when the Iris-AO mirror is flattened, that is, (a)). The aberrations are well reconstructed by COFFEE, both for low order aberrations which are similar in all reconstructions and in high frequency aberrations, which correspond to the borders of the segments.