Computer Science
Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010lyot.confe..65c&link_type=abstract
Proceedings of the conference In the Spirit of Lyot 2010: Direct Detection of Exoplanets and Circumstellar Disks. October 25 -
Computer Science
Scientific paper
In this work we introduce a simple adaptive coronographic mask (ACM) able to change its transmittance properties as a function of the instantaneous atmosphere conditions. The goal of this kind of ACM is to attain a high star light extinction rate even when observing from a ground based telescope. Using a simulation procedure the ACM has been compared to the hard edge mask. Simulation shows that if the area both masks are similar, ACM offers a small Inner Working Angle (IWA). Furthermore, a higher extinction can be attained if this technique is also applied to the Lyot stop. Adaptive mask technique has appeared to be particularly successful for low D/r0 values, what suggest a combination of our technique with that of the Lucking imaging specially when detecting in visible.
Cagigal M. A.
Cagigal Manuel P.
Canales Vidal F.
Valle P. J.
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