Galaxy10 is a CIFAR10-like galaxy morphology image classification dataset derived from Galaxy Zoo labels and optical survey imaging. The dataset provides RGB (g, r, i-band) cutouts of galaxies grouped into 10 broad morphology classes (e.g., smooth/round, disk face-on no spiral, edge-on disk, cigar-shaped, etc.). There are multiple published/used variants: the original Galaxy10/Galaxy10 SDSS release (images from the Sloan Digital Sky Survey; common counts reported in documentation are ~21.7k–25.7k images at 69×69 px) and the Galaxy10 DECaLS variant (images replaced/updated with higher-quality DESI Legacy Imaging Surveys / DECaLS images; the Hugging Face mirror of this variant lists ~17.7k images at 256×256 px). Labels originate from Galaxy Zoo volunteer votes. Typical use is supervised image classification (galaxy morphology). Note: some papers that evaluate on “Galaxy10” report using specific training subsets (for example the provided paper reports ~11,000 training samples across 10 classes for their experiments). Primary community resources: the original GitHub and astroNN documentation (henrysky/Galaxy10 and astroNN docs) and a Hugging Face dataset mirror at matthieulel/galaxy10_decals.
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