Astronomy and Astrophysics – Astronomy
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21430608b&link_type=abstract
American Astronomical Society, AAS Meeting #214, #306.08; Bulletin of the American Astronomical Society, Vol. 41, p.729
Astronomy and Astrophysics
Astronomy
Scientific paper
We discuss observing strategy for the Near Infrared Coronagraphic Imager (NICI) on the 8-m Gemini South telescope. NICI combines a number of techniques to attenuate starlight and suppress superspeckles: 1) coronagraphic imaging, 2) dual channel imaging for Spectral Differential Imaging (SDI) and 3) operation in a fixed Cassegrain rotator mode for Angular Differential Imaging (ADI), also referred to as roll subtraction. NICI is currently being used for a dedicated 50 night planet search campaign. While all of these techniques have been used individually in large planet-finding surveys, this is the first time ADI and SDI will be used with a coronagraph in a large survey. Thus, novel observing strategies are necessary to conduct a viable planet search campaign. We acknowledge funding support from NSF grants AST-0713881 and AST07-09484, and STScI HST-HF-01204.01-A.
Biller Beth A.
Chun Mark
Close Laird
Ftaclas Chris
Hartung Markus
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