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9 changes: 6 additions & 3 deletions index.md
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Expand Up @@ -21,6 +21,8 @@ This recommendation is scoped solely to EDF-S, leaving the remainder of Rubin's
The risk to Rubin science is minimal: EDF-S covers only about 23 deg<sup>2</sup> of Rubin's approximately 18,000 deg<sup>2</sup> survey area and does not materially affect any proprietary program.
The potential upsides, by contrast, are considerable.

EDF-S data products will be made publicly available shortly after the full proprietary Data Release in which they are produced, and will not affect the Rubin Data Release schedule.

## Rationale

The Euclid Consortium, Rubin Observatory, and NASA's Roman Space Telescope all plan to observe the 23 deg<sup>2</sup> Euclid Deep Field South (EDF-S) to a combined depth and cadence beyond any single survey's individual wide-area program.
Expand All @@ -35,10 +37,11 @@ There is also a strong benefit for AI research.
Open datasets have driven some of the most productive advances in AI: the Multimodal Universe dataset, ImageNet, and AlphaFold's structural archive were all released openly from the start, and each catalyzed a research community that built on it for years afterward.
A fully public EDF-S would be precisely the kind of open, scientific dataset that programs such as NSF's AI-Ready Datasets solicitation ([NSF 26-512](https://www.nsf.gov/funding/opportunities/ai-datasets-unlocking-dataset-value-ai-enabled-scientific-discovery/nsf26-512/solicitation)) are designed to advance: rich enough for AI-driven discovery, and open enough for the community to build the enhancement pipelines and cross-survey harmonization tools that such discovery requires.

EDF-S, rather than COSMOS, is proposed for public release because Euclid does not plan to observe COSMOS as one of its primary dedicated deep fields ({cite}`esa_euclid_deepfields`).
A public EDF-S also benefits the community directly: Science Collaborations would no longer need to require data rights as a condition of membership, broadening participation and, in turn, the range of science they can pursue.

EDF-S, rather than COSMOS, is proposed for public release because Euclid does not plan to observe COSMOS as one of its primary dedicated deep fields ({cite}`esa_euclid_deepfields`).
Open, non-proprietary fields have historically become the community's most productive resources: the COSMOS field remains a cornerstone of astrophysics decades after its inception, precisely because it was kept open from the start.
But with nearly twenty years of deep imaging from HST, Spitzer, Chandra, and VLA, its remaining discovery potential is limited, and for this reason, Euclid has not chosen it as a deep field.
But with nearly twenty years of deep imaging from HST, Spitzer, Chandra, and the VLA, its remaining discovery potential is limited, and for this reason, Euclid has not chosen it as a deep field.
EDF-S is a new field observed by Rubin, Euclid and Roman and has decades of discovery potential ahead of it.
A fully open Rubin EDF-S has the potential to do for the next generation what COSMOS did for this one.

Expand All @@ -60,4 +63,4 @@ A fully open Rubin EDF-S has the potential to do for the next generation what CO
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2 changes: 1 addition & 1 deletion local.bib
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Expand Up @@ -41,4 +41,4 @@ @online{esa_euclid_deepfields
url = {https://sci.esa.int/web/euclid/-/61408-the-euclid-deep-fields},
urldate = {2026-09-18},
year = {2024}
}
}
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