Presentation
1 August 2021 On-sky demonstration of stochastic speckle discrimination for companion detection with the MKID Exoplanet Camera (MEC)
Sarah Steiger, Thayne Currie, Timothy D. Brandt, Olivier Guyon, Masayuki Kuzuhara, Jeffrey Chilcote, Tyler Groff, Julien Lozi, Alexander B. Walter, Neelay Fruitwala, John I. Bailey, Nicholas Zobrist, Noah Swimmer, Isabel Lipartito, Jennifer P. Smith, Clint Bockstiegel, Seth R. Meeker, Gregoire Coiffard, Rupert Dodkins, Paul Szypryt, Kristina K. Davis, Miguel Daal, Bruce Bumble, Sebastien Vievard, Ananya Sahoo, Vincent Deo, Nemanja Jovanovic, Frantz Martinache, Motohide Tamura, Benjamin Mazin
Author Affiliations +
Abstract
We present an on-sky demonstration of a post-processing technique for companion detection called Stochastic Speckle Discrimination (SSD) and its ability to improve the detection of faint companions using SCExAO and the MKID Exoplanet Camera (MEC). Using this SSD technique, MEC is able to resolve companions at a comparable signal to noise to other integral field spectrographs solely utilizing photon arrival time information and without the use of any PSF subtraction techniques. SSD takes advantage of photon counting detectors, like the MKID detector found in MEC, to directly probe the photon arrival time statistics that describe the speckle field and allows us to identify and distinguish problematic speckles from companions of comparable brightness in an image. This technique is especially effective at close angular separations where the speckle intensity is large and where traditional post-processing techniques, like ADI, suffer.
Conference Presentation
© (2021) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Sarah Steiger, Thayne Currie, Timothy D. Brandt, Olivier Guyon, Masayuki Kuzuhara, Jeffrey Chilcote, Tyler Groff, Julien Lozi, Alexander B. Walter, Neelay Fruitwala, John I. Bailey, Nicholas Zobrist, Noah Swimmer, Isabel Lipartito, Jennifer P. Smith, Clint Bockstiegel, Seth R. Meeker, Gregoire Coiffard, Rupert Dodkins, Paul Szypryt, Kristina K. Davis, Miguel Daal, Bruce Bumble, Sebastien Vievard, Ananya Sahoo, Vincent Deo, Nemanja Jovanovic, Frantz Martinache, Motohide Tamura, and Benjamin Mazin "On-sky demonstration of stochastic speckle discrimination for companion detection with the MKID Exoplanet Camera (MEC)", Proc. SPIE 11823, Techniques and Instrumentation for Detection of Exoplanets X, 1182307 (1 August 2021); https://doi.org/10.1117/12.2594872
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KEYWORDS
Speckle

Stochastic processes

Cameras

Exoplanets

Point spread functions

Sensors

Image resolution

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