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

arXiv:2609.28821 · astro-ph.IM, astro-ph.CO · Submitted 2026-09-23 · Read on arXiv

astro-ph.IM, astro-ph.CO

Submitted: 2026-09-23

Updated: 2026-09-23

Code: https://github.com/Roman-HLIS-Cosmology-PIT/PSFSim

Terminology

• Weak Lensing — 5× in this paper · explained in 2 episodes
• Aperture — 3× in this paper · explained in 1 episode
• Microlensing — 3× in this paper · explained in 2 episodes
• Wide Field Instrument — 3× in this paper
• Alignment — 1× in this paper · explained in 1 episode
• Calibration — 1× in this paper · explained in 7 episodes
• Clustering — 1× in this paper · explained in 2 episodes
• Core — 1× in this paper · explained in 2 episodes
• Diffusion Model — 1× in this paper · explained in 8 episodes
• Diffusion Models — 1× in this paper · explained in 6 episodes
• Fidelity — 1× in this paper · explained in 2 episodes
• Sensor Chip Assembly — 1× in this paper
• Trace — 1× in this paper · explained in 2 episodes

Sources

• The Wide Field Infrared Survey Telescope: 100 Hubbles for the 2020s
• Modeling the impact of filter-substrate refraction in the Roman point spread function
• Charge diffusion and modulation transfer function in a Nancy Grace Roman Space Telescope detector
• Euclid: Precise inference of defocus wavefront error from image diffraction spike measurements
• Roman Observations Time Allocation Committee: Final Report and Recommendations
• In Situ Measurements of the Reflectances of the LSSTCam Optics and Assessing the Impact of Optical Ghosts
• An overview of stray light findings and interpretation during on-sky commissioning of LSSTCam

Related papers

• A signal dedispersion algorithm for imaging-based transient searches
• AVICA: A fully automated CASA pipeline for large volume VLBI data calibration
• Spectral Map Making with SPHEREx
• Long-Integration Magnetar Burst Observatory (LIMBO): Instrument Summary and Early FRB Rate Constraints
• Towards independent event horizon imaging of the supermassive black holes in M87 and the Milky Way
• A PINK update: Improvements to the CELEBI fast radio burst data reduction and analysis pipeline