FM8.3.03 — The Various Challenges of Subtracting Speckles and Planet Detection/Characterization in High Contrast Imaging

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Aug 4th at 11:30 AM until 12:00 PM

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Author(s): Christian Marois1

Institution(s): 1. National Research Council of Canada

Significant progresses have been achieved over the last 20 years in the field of speckle subtraction and planet detection. From the early days of simple “reference star subtraction”, astronomers are now using more advance observing techniques, such as the SDI and ADI, that are combined with complex image processing algorithms to gain more than two orders of magnitude of contrast. I will review the various observing techniques and algorithms now used in the field, as well as the various challenges when trying to optimize the speckle subtraction to maximize planet detection and characterization. In addition, I will review the difficult problem of identifying faint planets in noisy speckle-limited images.