24 September 2012 Fully optimized shaped pupils: preparation for a test at the Subaru Telescope
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Abstract
The SCExAO instrument at the Subaru telescope, mainly based on a PIAA coronagraph can benefit from the addition of a robust and simple shaped pupil coronagraph. New shaped pupils, fully optimized in 2 dimensions, make it possible to design optimal apodizers for arbitrarily complex apertures, for instance on-axis telescopes such as the Subaru telescope. We have designed several masks with inner working angles as small as 2.5 λ / D, and for high-contrast regions with different shapes. Using Princeton University nanofabrication facilities, we have manufactured two masks by photolithography. These masks have been tested in the laboratory, both in Princeton and in the facilities of the National Astronomical Observatory of Japan (NAOJ) in Hilo. The goal of this work is to prepare tests on the sky of a shaped pupil coronagraph in 2012.
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Alexis Carlotti, Alexis Carlotti, N. Jeremy Kasdin, N. Jeremy Kasdin, Frantz Martinache, Frantz Martinache, Robert J. Vanderbei, Robert J. Vanderbei, Elizabeth J Young, Elizabeth J Young, George Che, George Che, Tyler D. Groff, Tyler D. Groff, Olivier Guyon, Olivier Guyon, } "Fully optimized shaped pupils: preparation for a test at the Subaru Telescope", Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 84463C (24 September 2012); doi: 10.1117/12.927129; https://doi.org/10.1117/12.927129
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