PSFSim: PhySics First Simulations for the Point Spread Function of the Roman Space Telescope

@misc{dalal2026psfsim,
  title = {{PSFSim: PhySics First Simulations for the Point Spread Function of the Roman Space Telescope}},
  author = {Nihar Dalal and Chris Hirata and Charuhas Shiveshwarkar and Anthony Harbo Torres and Chun-Hao To and Elise Moore and Katherine Laliotis and David Kuhtenia and Emily Macbeth},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.28821},
  eprint = {2609.28821},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.28821},
  note = {CC BY 4.0},
}

TY  - UNPB
TI  - PSFSim: PhySics First Simulations for the Point Spread Function of the Roman Space Telescope
AU  - Nihar Dalal
AU  - Chris Hirata
AU  - Charuhas Shiveshwarkar
AU  - Anthony Harbo Torres
AU  - Chun-Hao To
AU  - Elise Moore
AU  - Katherine Laliotis
AU  - David Kuhtenia
AU  - Emily Macbeth
PY  - 2026
DA  - 2026/09/23
PB  - arXiv
DO  - 10.48550/arxiv.2609.28821
UR  - https://arxiv.org/abs/2609.28821
AB  - We present a new tool for generating simulated point spread functions (PSFs) in the Wide Field Instrument (WFI) of the Nancy Grace Roman Space Telescope. The simulation tool is physics forward, and performs a raytrace of the optical system of the instrument to compute the PSF, while also accounting for various detector effects. The tool also has the capability to add perturbations to the optical system and detectors. We explore several applications of the tool that may arise during the commissioning of the telescope, including optical ghosts, measuring the optical aberrations from diffraction spikes, and studying the effect of mirror polarization.
ER  -