Work

NICI: combining coronagraphy, ADI, and SDI

Year: 2008

Type: conference-paper

Abstract: The Near-Infrared Coronagraphic Imager (NICI) is a high-contrast AO imager at the Gemini South telescope. The camera includes a coronagraphic mask and dual channel imaging for Spectral Differential Imaging (SDI). The instrument can also be used in a fixed Cassegrain Rotator mode for Angular Differential Imaging (ADI). While coronagraphy, SDI, and ADI have been applied before in direct imaging searches for exoplanets. NICI represents the first time that these 3 techniques can be combined. We present preliminary NICI commissioning data using these techniques and show that combining SDI and ADI results in significant gains.

Source: Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

DOI: 10.1117/12.788390

Authors: Étienne Artigau, Beth A. Biller, Zahed Wahhaj, Markus Hartung, Thomas L. Hayward, Laird M. Close, Mark R. Chun, Michael C. Liu, Gelys Trancho, François Rigaut, Douglas W. Toomey, Christ Ftaclas

Institutions: University of Hawaiʻi at Mānoa, University of Hawaii System, University of Arizona

Language: English

Topic: Adaptive optics and wavefront sensing

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2125656741

FWCI: 8.601

Cites: 11

Cited by: 18

Related to: 10