2 papers
astro-ph.IM2025
A Classic Nonlinearity Correction Algorithm for Detectors Read Out Up-The-Ramp
Timothy D. Brandt
We derive an algorithm for computing a classic nonlinearity correction -- applicable to constant and uniform illumination -- in the presence of read noise and photon noise. The alg…
astro-ph.IM2025
Computing the Electronic Gain for Detectors Read Out Up-The-Ramp
Timothy D. Brandt
The electronic gain -- the conversion between photoelectrons on a pixel and the digital number recorded to disk -- gives physical units to an astronomical image and sets the relati…