4 papers
New Time-Dependent WFC3/IR Inverse Sensitivities
Annalisa Calamida, Mariarosa Marinelli, Varun Bajaj +2
We present new time-dependent inverse sensitivities for the WFC3/IR channel. These were calculated using the sensitivity change slopes measured by \citet{2024wfc..rept....6M} and p…
Testing and Validation of the Updated Pixel-Based Non-Linearity Calibration File for WFC3/IR
K. Huynh, V. Bajaj, M. Marinelli +3
The WFC3\IR channel has an innate non-linear response to incident photons, which is corrected for in the calwf3 pipeline with the NLINFILE reference file. The 2009 solution is base…
WFC3/UVIS Geometric Distortion -- Time Evolution of Linear Terms w.r.t Gaia
Anne O'Connor, Varun Bajaj, Jennifer Mack +1
We align more than 7,400 WFC3/UVIS exposures to the Gaia DR3 catalog to examine the time evolution of the linear terms (shift, rotation, scale and skew) of the geometric distortion…
Pixel-Based Non-Linearity Correction for the WFC3 IR Detector
Sachindev S. Shenoy, Ky Huynh, Varun Bajaj +1
The current non-linearity correction for the Wide Field Camera 3 Infrared (WFC3/IR) channel is based on ground-based data acquired during WFC3's Thermal Vacuum 3 (TV3) testing camp…