Shaped pupil design for the Gemini Planet Imager

Details Shaped pupil design for the Gemini Planet Imager Shaped pupil design for the Gemini Planet Imager

2009-05-11

arxiv.org/abs/0905.1676v1

Astrophys.J.698:938-943,2009

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

20 pages, 7 figures, accepted for publication in ApJ

Scientific paper

10.1088/0004-637X/698/1/938

The Gemini Planet Imager (GPI) is an instrument designed for the Gemini South telescope to image young Jupiter-mass planets in the infrared. To achieve the high contrast needed for this, it employs an apodized pupil Lyot coronagraph (APLC) to remove most of the starlight. Current designs use a partially-transmitting apodizer in the pupil; we examine the use of binary apodizations in the form of starshaped shaped pupils, and present a design that could achieve comparable performance, along with a series of design guidelines for creating shaped pupil versions of APLCs in other systems.

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