49 citations · 116 across the 5 of their papers we have counts for
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Spot-Based Measurement of the Brighter-Fatter Effect on a Roman Space Telescope H4RG Detector and Comparison with Flat-Field Data
Andrés A. Plazas Malagón, Charles Shapiro, Ami Choi +1
We present the measurement and characterization of the brighter-fatter effect (BFE) on a NASA Roman Space Telescope development Teledyne H4RG-10 near-infrared detector using labora…
Laboratory measurement of the brighter-fatter effect in an H2RG infrared detector
Andrés A. Plazas, Charles A. Shapiro, R. Smith +2
The "brighter-fatter" (BF) effect is a phenomenon (originally discovered in charge coupled devices) in which the size of the detector point spread function (PSF) increases with bri…
Nonlinearity and pixel shifting effects in HXRG infrared detectors
A. A. Plazas, C. Shapiro, R. Smith +2
We study the nonlinearity (NL) in the conversion from charge to voltage in infrared detectors (HXRG) for use in precision astronomy. We present laboratory measurements of the NL fu…
The effect of detector nonlinearity on WFIRST PSF profiles for weak gravitational lensing measurements
Andrés. A. Plazas, Charles A. Shapiro, Arun Kannawadi +3
Weak gravitational lensing (WL) is one of the most powerful techniques to learn about the dark sector of the universe. To extract the WL signal from astronomical observations, gala…
Initial results from a laboratory emulation of weak gravitational lensing measurements
Suresh Seshadri, Charles Shapiro, Timothy Goodsall +5
Weak gravitational lensing observations are a key science driver for the NASA Wide Field Infrared Survey Telescope (WFIRST). To validate the performance of the WFIRST infrared dete…