Fig. 8.
Phases reconstructed with COFFEE in coronagraphic configuration, in radians: (a) when the Iris-AO is flattened (it is also our reference phase), (b) when a 188 nm piston is applied on the central segment, (c) when a 0.2 mrad tip 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). Even if high-order seem quite well reconstructed, low-order aberrations in the three cases are not equally reconstructed.
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