Other
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21542101d&link_type=abstract
American Astronomical Society, AAS Meeting #215, #421.01; Bulletin of the American Astronomical Society, Vol. 42, p.286
Other
Scientific paper
We present Angular Differential Imaging (ADI) commissioning results using the next-generation high contrast instrumentation at the Subaru Telescope. The Subaru high contrast instrumentation consists of a 188 actuator AO system (AO188), classical Lyot coronagraph, and near infrared differential imaging science camera (HiCIAO). This system was designed specifically to achieve the requisite high angular resolution and contrast to directly detect the thermal emission of extrasolar planets. ADI suppresses optical speckle features by fixing the telescope PSF with respect to the science camera detector, while allowing the field with any companions to rotate freely. In post processing, the sequence of images are registered and combined to produce a reference PSF that is subtracted from each image. The final images are de-rotated and to realign the field with a fixed position angle. We implement ADI PSF subtraction algorithms, including the LOCI algorithm introduced in Lafrenière et al. 2007. The sensitivity of our results is compared with high contrast observations at other telescopes.
Dressing Courtney D.
Knapp Gillian
McElwain Michael
SEEDS Collaboration
Turner Emma
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