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astro-ph.IM2026
Calibration of an Analog-to-Digital Conversion Nonlinearity in JWST/NIRISS
Shashank Dholakia, Shishir Dholakia, Benjamin J. S. Pope +4
We quantify an unusual flux-dependent systematic which is periodic in raw counts in flight data from the James Webb Space Telescope's Near Infrared Imager and Slitless Spectrograph…
astro-ph.IM2025
PIRATES -- a machine-learning framework for polarized, interferometric image reconstruction
Lucinda Lilley, Barnaby Norris, Peter Tuthill +13
Optical interferometric image reconstruction is a challenging, ill-posed optimization problem which usually relies on heavy regularization for convergence. Conventional algorithms…