ON-SKY DEMONSTRATION OF A LINEAR BAND-LIMITED MASK WITH APPLICATION TO VISUAL BINARY STARS

@article{Crepp2010ONSKYDO,
  title={ON-SKY DEMONSTRATION OF A LINEAR BAND-LIMITED MASK WITH APPLICATION TO VISUAL BINARY STARS},
  author={Justin R. Crepp and Eugene Serabyn and Joseph C. Carson and Jian Ge and Ivan I. Kravchenko},
  journal={The Astrophysical Journal},
  year={2010},
  volume={715},
  pages={1533-1538}
}
We have designed and built the first band-limited coronagraphic mask used for ground-based high-contrast imaging observations. The mask resides in the focal plane of the near-infrared camera PHARO at the Palomar Hale telescope and receives a well-corrected beam from an extreme adaptive optics system. Its performance on-sky with single stars is comparable to current state-of-the-art instruments: contrast levels of ~10^(–5) or better at 0."8 in K_s after post-processing, depending on how well non… 

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