Calibration and Photometry

Some of the largest sources of uncertainty in supernova cosmology fall in the category of “calibration,” determining the relation between our measurements and the intrinsic fluxes above the atmosphere. I work on detector effects (for example, nonlinearity), determining atmospheric and instrumental responses, and calibration strategy (for WFIRST and Hubble).

Example Work:

A Calibration of NICMOS Camera 2 for Low Count Rates

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