Late Breaking News

Due to the evolving nature of the Roman Space Telescope mission, specific instrument and operational parameters are subject to refinement leading up to launch and commissioning. This Late Breaking News page serves to notify the community of any important changes to linked technical specifications, tools, and performance metrics as pertinent to the proposal call. Proposers are strongly encouraged to check this page frequently, as any updates announced here will supersede corresponding details found in the main Call for Proposals text. 



 

Roman WFI ETC version R2026.1 is out! Updates include:

  • New Point Spread Functions from STPSF with more realistic charge diffusion and jitter
  • Proper handling of extreme over-saturation
  • Updated spectroscopy axis orientation
  • Proper extraction of flux from saturated observations
  • Improved spatial positioning accuracy in the 2D plot display


Roman I-Sim v0.12 Released

We are pleased to announce the release of Roman I-Sim version 0.12, available as of January 20, 2026. This release includes several important updates and improvements:

  • Significant performance enhancements in PSF rendering for fields containing large numbers of stars
  • Support for the new roman_datamodels Level 2 (L2) schema
  • Improved flat-field handling

More information is available here. We encourage users to upgrade to this version to take advantage of these improvements.


 

Two new technical documents have been released to assist the community in preparing Roman Cycle 1 proposals. These reports provide critical updates on instrument performance and operational strategies.

  • WFI Parallel Observations during CGI Operations: This report outlines the feasibility and current strategy for conducting Wide Field Instrument (WFI) parallel observations while the Coronagraph Instrument (CGI) is the primary observer. 

  • WFI Saturation and Persistence Properties: This document presents interim results from recent Thermal-Vacuum (TVAC) testing regarding the WFI’s response to bright point sources. It provides updated data on saturation levels and persistence effects.