Download ULLYSES Data

ULLYSES HLSPs and their contributing data were previously hosted here, but have been removed as part of Data Release 5b (Nov. 15 2022). Instead, it is recommended to download data using the new ULLYSES search form, hosted by MAST.

This search form supports querying targets and datasets based on both observational and astrophysical parameters, a key functionality given the multi-dimensionality of the parameter space covered by ULLYSES targets. In addition to specialized search parameters, the new form also features direct file downloads and customized API script generation. The search form, which follows the format of the new HST search form, is fully integrated in MAST to ensure long-term maintainability and legacy.

To download HLSPs only, the new ULLYSES search form should be used. To download HLSPs and their contributing data, the MAST Data Discovery Portal should be used by following these instructions. HLSPs may also be downloaded directly as a High-Level Science Product collection using the DOI. If you have any feedback or questions on using the new ULLYSES search form, feel free to reach out through the Archive Help Desk or send an email to

Some highlights of the new ULLYSES search form are provided below, with corresponding screenshots of the actual search form.

Charting young stars’ ultraviolet light with Hubble.

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