Alumni

Former members of the EPSIG team, now on to new adventures elsewhere...


Alumni - Students

 Alex Greenbaum:  Now a postdoc at University of Michigan.  As a graduate student at Johns Hopkins University, I worked on a high angular resolution technique called non-redundant masking (NRM) that can be used for the direct detection of young planets in the process of formation. I work with the non-redundant mask on the Gemini Planet Imager to look for these young planets and learn about how the instrument performs. I use the same concepts to do simulations for the NRM on the James Webb Space Telescope. I am also interested in wavefront sensing and image reconstruction.


Olivier Levecq

Elena Gofas Salas

Alumni - Postdocs 


Mamadou N'Diaye: My research interests deal with exoplanet direct imaging and spectroscopy. I have been doing research and development in astronomical instrumentation, investigating innovative concepts in coronagraphy and wavefront sensing.


Jackie RadiganJackie Radigan: Now a Faculty Member at Utah Valley University. I am interested in understanding and characterizing cloudy brown dwarf and giant planet atmospheres using photometric and spectroscopic techniques, with a focus on NIR variability.  My favorite objects to study are L/T transition brown dwarfs, which can be highly variable due the presence of patchy clouds and weather patterns in their photospheres.


Marie Ygouf: Now a postdoc at IPAC/Caltech.  My current research focuses on high contrast multispectral imaging in view of directly detecting and characterizing exoplanets. In this framework, the development of innovative image post-processing methods is essential in order to eliminate the quasi-static speckles in the final image, which remain the main limitation for high contrast.

More generally, I am interested in improving the performance of future instruments for high contrast imaging, taking profit of data analysis and of the detailed characterization of the instrumental limitations and calibration capabilities. My fields of interest include direct detection of exoplanets, image processing, high angular resolution and high contrast techniques, wavefront sensing and control, simulation, modeling and optical design.



Elodie Choquetnow a Hubble Fellow at JPL

Margaret Moerchen now Science Deputy to the President of the Carnegie Institute of Science



Alumni - Research & Instrument Analysts


Abhijith Rajan now a grad student at Arizona State University - and soon returning to EPSIG as a postdoc.

Alumni - Staff

Neil Zimmerman: I apply modeling and optimization tools to high-contrast imaging problems, to maximize the scientific yield at both the instrument design and data processing stages. During my graduate work, I created the first data-cube extraction pipeline for an AO-fed, coronagraphic integral field spectrograph. More recently, I have concentrated my efforts on the coronagraph concept for the WFIRST mission. I designed a novel mask configuration for its characterization mode, to enable broadband spectroscopy of gas giant exoplanets in reflected starlight. Since joining STScI, I have teamed up with fellow EPSIG members to estimate the planet detection limits of the WFIRST coronagraph design, by using advanced starlight subtraction techniques on testbed data sets and end-to-end observatory simulations.


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