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This catalog is developed for use with the Siril 1.4 series as a public reference database. Hugging Face is one of several mirrors used to distribute the data. This database is provided for both offline download and also for online access. This dataset is provided for scientific and reproducibility purposes.
This is an extract of the Gaia DR3 catalog optimized for spectrophotometric color calibration. The catalog is indexed at HEALpix level 8 and selects up to the 127 brightest sources in each level 8 HEALpixel, though in many HEALpixels the number is limited by the Gaia sources that have xp_sampled records available. However this strategy ensures an even density of stars, providing sufficient stars for color calibration while avoiding overpopulation of the catalog in densely populated regions of the sky. The catalog is provided as 48 data files, each covering a level 1 HEALpixel indicated by the final number in the filename. The database format is specified here https://zenodo.org/records/14697486
This dataset is derived from Gaia DR3 data provided by the European Space Agency (ESA). Redistribution follows the Gaia data usage policy. Please cite Gaia DR3 when using this catalog in academic work. The GPL-3.0 license applies to the catalog structure, indexing, and packaging; the underlying Gaia DR3 data remains subject to ESA Gaia data terms.
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