  The current generation of ground-based coronagraphic instruments uses
deformable mirrors to correct for phase errors and to improve contrast levels
at small angular separations. Improving these techniques, several space and
ground based instruments are currently developed using two deformable mirrors
to correct for both phase and amplitude errors. However, as wavefront control
techniques improve, more complex telescope pupil geometries will soon be a
limiting factor for these next generation coronagraphic instru- ments. The
technique presented in this proceeding, the Active Correction of Aperture
Discontinuities method, is taking advantage of the fact that most future
coronagraphic instruments will include two deformable mirrors, and is proposing
to find the shapes and actuator movements to correct for the effect introduced
by these complex pupil geometries. We here present the results of the
parametric analysis realized on the WFIRST pupil for which we obtained high
contrast levels with several deformable mirror setups (size, separation between
them), coronagraphs (Vortex charge 2, vortex charge 4, APLC) and spectral
bandwidths. However, because contrast levels and separation are not the only
metrics to maximize the scientific return of an instrument, we also included in
this study the influence of these deformable mirror shapes on the throughput of
the instrument and sensitivity to pointing jitters. Finally, we present results
obtained on another potential space based telescope segmented aperture. The
main result of this proceeding is that we now obtain comparable performance
than the coronagraphs previously designed for WFIRST. First result from the
parametric analysis strongly suggest that the 2 deformable mirror set up (size
and distance between them) has a important impact on the performance in
contrast and throughput of the final instrument.
