PHASE-INDUCED PUPIL APODIZATION: A NEW CONCEPT FOR A SIMPLIER DARWIN/TPf

摘要

The main obstacle toward direct imaging of exoplan-ets with high quality optics in space is the diffraction produced by the edges of the telescope pupil. One suggested solution to this problem is to apodize the telescope pupil with a transmissive mask. Unfortunately, this mask reduces the telescope throughput and angular resolution. In this paper, we suggest to produce an apodized pupil by geometrically remapping the entrance pupil thanks to reflective optics. We demonstrate that this technique allows direct imaging of a Earth-Sun system at 10pc in the visible in less than 1h exposure time with a 1.5m telescope.