Fully optimized shaped pupils: preparation for a test at the Subaru Telescope

Alexis Carlotti; N. Jeremy Kasdin; Frantz Martinache; Robert J. Vanderbei; Elizabeth J Young; George Che; Tyler D. Groff; Olivier Guyon

doi:10.1117/12.927129

24 September 2012 Fully optimized shaped pupils: preparation for a test at the Subaru Telescope

Alexis Carlotti, N. Jeremy Kasdin, Frantz Martinache, Robert J. Vanderbei, Elizabeth J Young, George Che, Tyler D. Groff, Olivier Guyon

Author Affiliations +

Proceedings Volume 8446, Ground-based and Airborne Instrumentation for Astronomy IV; 84463C (2012) https://doi.org/10.1117/12.927129
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

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.

Citation Download Citation

Alexis Carlotti, N. Jeremy Kasdin, Frantz Martinache, Robert J. Vanderbei, Elizabeth J Young, George Che, Tyler D. Groff, and 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); https://doi.org/10.1117/12.927129

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