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 xpsampled records available. However this strategy ensures an even density of stars, providing…