Jay is an AURA Observatory Scientist in the in the instruments division. His functional duties include modeling the PSF and monitoring and improving the pixel-based CTE correction for WFC3/UVIS and ACS/WFC and developing the JWST astrometric calibration field. His science interests involve high-precision photometry and astrometry in undersampled images (such as HST's), which requires exquisite modeling of the PSF.
- Multiple stellar populations in globular clusters
- High-precision proper motions and internal kinematics of stellar systems
- Globular cluster formation and evolution
- Astrometric detection of Black Holes
Research Topics: HST, Globular Clusters, Proper Motions, White Dwarfs, Photometric Techniques