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NASA OpenUniverse 2024 Simulated Roman & Rubin Images

NASA OpenUniverse 2024 Simulated Roman & Rubin Images

Summary

The NASA OpenUniverse2024 project, led by Michael Troxel (Duke), simulated spatially overlapping imaging surveys to be carried out by the Nancy Grace Roman Space Telescope and the Vera C. Rubin Observatory. The simulations were carried out on the Argonne National Laboratory's Theta Cluster (before it was decommissioned) and consists of the LSST ELAIS-S1 Deep Drilling Field (DDF); the Roman High Latitude Time Domain Survey, shifted to overlap the ELAIS region and the LSST DDF; overlapping LSST Wide-Fast-Deep survey (with a rolling cadence); overlapping Roman High Latitude Wide Area Survey (HLWAS) in the same region; and, a deep-field calibration region of the HLWAS in the same region.

Roman-Rubin image simulation
A 46 arcsec cutout(Roman: left, Y106/J129/H158; LSST: right, g/r/i) that shows the power of combining LSST and Roman data to inform deblending the larger LSST data set. The Roman cutout both differentiates several blended systems in this region of the sky, but can also resolve very faint extended objects like the vertical red galaxy above the distance scale in the lower left. The difference in the coadd PSF is clearly visible in the star in the bottom central edge of the images. From Open Universe 2024 et al. (2025, arXiv:2501.05632).

Data Products

The primary data products, images and tables, have been publicly released by the NASA/IPAC Infrared Science Archive (IRSA):

Additional data products and documentation associated with this set of data products are available at the link above.