Performance of the Near-infrared coronagraphic imager on Gemini-South

Details Performance of the Near-infrared coronagraphic imager on Gemini-South Performance of the Near-infrared coronagraphic imager on Gemini-South

2008-09-17

arxiv.org/abs/0809.3017v1

Astronomy and Astrophysics

Astrophysics

Proc. SPIE, Vol. 7015, 70151V (2008)

Scientific paper

10.1117/12.787683

We present the coronagraphic and adaptive optics performance of the Gemini-South Near-Infrared Coronagraphic Imager (NICI). NICI includes a dual-channel imager for simultaneous spectral difference imaging, a dedicated 85-element curvature adaptive optics system, and a built-in Lyot coronagraph. It is specifically designed to survey for and image large extra-solar gaseous planets on the Gemini Observatory 8-meter telescope in Chile. We present the on-sky performance of the individual subsystems along with the end-to-end contrast curve. These are compared to our model predictions for the adaptive optics system, the coronagraph, and the spectral difference imaging.

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