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

Mark Chun; Doug Toomey; Zahed Wahhaj; Beth Biller; Etienne Artigau; Tom Hayward; Mike Liu; Laird Close; Markus Hartung; Francois Rigaut; Christ Ftaclas

doi:10.1117/12.787683

10 July 2008 Performance of the near-infrared coronagraphic imager on Gemini-South

Mark Chun, Doug Toomey, Zahed Wahhaj, Beth Biller, Etienne Artigau, Tom Hayward, Mike Liu, Laird Close, Markus Hartung, Francois Rigaut, Christ Ftaclas

Author Affiliations +

Proceedings Volume 7015, Adaptive Optics Systems; 70151V (2008) https://doi.org/10.1117/12.787683
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

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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Mark Chun, Doug Toomey, Zahed Wahhaj, Beth Biller, Etienne Artigau, Tom Hayward, Mike Liu, Laird Close, Markus Hartung, Francois Rigaut, and Christ Ftaclas "Performance of the near-infrared coronagraphic imager on Gemini-South", Proc. SPIE 7015, Adaptive Optics Systems, 70151V (10 July 2008); https://doi.org/10.1117/12.787683

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