Phase-induced pupil apodization: a new concept for a simplier DARWIN/TPF

Details Phase-induced pupil apodization: a new concept for a simplier DARWIN/TPF Phase-induced pupil apodization: a new concept for a simplier DARWIN/TPF

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003esasp.539..435g&link_type=abstract

In: Proceedings of the Conference on Towards Other Earths: DARWIN/TPF and the Search for Extrasolar Terrestrial Planets, 22-25 A

Other

Exoplanets, Coronagraphy, Apodization

Scientific paper

The main obstacle toward direct imaging of exoplanets 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 demontrate that this technique allows direct imaging of an Earth-Sun system at 10pc in the visible in less than 1h exposure time with a 1.5m telescope.

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