This note presents a practical formulation for constructing weight maps in CCD photometry, accounting for various noise contributions under the assumption of statistical independence. We provide complete equations for both electron-count and ADU-based imaging data, along with simplified expressions for different observational conditions.
Cite
@article{arxiv.2507.18679,
title = {A Practical Framework for Weight Map Construction in CCD Photometry},
author = {Dezi Liu and Yuan Fang},
journal= {arXiv preprint arXiv:2507.18679},
year = {2025}
}