Theoretical Framework and Simulation Results for Implementing Weighted Multiple Sampling in Scientific CCDs
Abstract
The Digital Correlated Double Sampling (DCDS) is a technique based on multiple analog-to-digital conversions of every pixel when reading a CCD out. This technique allows to remove analog integrators, simplifying the readout electronics circuitry. In this work, a theoretical framework that computes the optimal weighted coefficients of the pixels samples, which minimize the readout noise measured at the CCD output is presented. By using a noise model for the CCD output amplifier where white and flicker noise are treated separately, the mathematical tool presented allows for the computation of the optimal samples coefficients in a deterministic fashion. By modifying the noise profile, our simulation results get in agreement and thus explain results that were in mutual disagreement up until now.
Keywords
Cite
@article{arxiv.1510.09105,
title = {Theoretical Framework and Simulation Results for Implementing Weighted Multiple Sampling in Scientific CCDs},
author = {Cristobal Alessandri and Dani Guzman and Angel Abusleme and Diego Avila and Enrique Alvarez and Hernan Campillo and Alexandra Gallyas and Christian Oberli and Marcelo Guarini},
journal= {arXiv preprint arXiv:1510.09105},
year = {2015}
}
Comments
This paper was presented at the Scientific Detectors Workshop 2013 and submitted to be published in the proceedings. However, the proceedings have not been published yet