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Declare CC BY-NC 4.0 and credit Cassini ISS / NASA sources
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Data sources and acknowledgments

Cassini ISS / NASA

The Cassini-derived real branch uses observations from the Imaging Science Subsystem (ISS) of the Cassini-Huygens mission. Cassini ISS comprises narrow-angle and wide-angle imaging cameras. The underlying spacecraft observations are credited to NASA / JPL-Caltech / Space Science Institute.

Official source and archive references:

These are the upstream mission and archive references, not a claim that NASA produced or endorsed the ASTRA-SR benchmark. Retain any additional credit specified for individual source products.

ASTRA-SR processing

The ASTRA-SR authors curated and preprocessed the clean-source images, formed the 512x512 / 256x256 resampled pairs, and synthesized spatially varying blur and Gaussian noise under the frozen protocol. The release contains float32 FITS arrays, source-ID split assignments and per-sample protocol/PSF hashes. It is a processed research dataset, not an unmodified mirror of NASA raw products. Source names remain in dataset_index.jsonl and the historical source_manifest_strict_v2_x2_v1.jsonl.

Suggested credit when using this release:

ASTRA-SR dataset and processing: Xining Ge, Ziteng Cui and Shuhong Liu. Cassini ISS source observations: NASA / JPL-Caltech / Space Science Institute. Archive reference: NASA Planetary Data System, Ring-Moon Systems Node.

Also cite ASTRA-SR, arXiv:2609.26731, link the dataset and CC BY-NC 4.0, and describe any further modifications you make.

Other inputs and scope

The auxiliary png branch is a separate historical source collection; this notice does not label every png sample as NASA/Cassini imagery. Its full upstream source/license mapping is still pending maintainer verification. The MASS atmospheric-observation CSV and the full PSF-bank population are also not bundled here. Exact archive-product/download-version mappings are not reconstructed merely from the processed FITS filenames.

The noncommercial project license applies only to the authors' licensable contributions. Original NASA/Cassini and other third-party material retain their applicable source terms; see LICENSE_SCOPE.md.