The SPHEREx Photometry and Image Fitting Framework (SPIFF) Spectrophotometry Library

SPIFF is a Python spectrophotometry extraction tool for fast-moving point sources detected by the SPHEREx mission. This QR2-2026-04-24 data package bundles the QR2 SPIFF spectral-library snapshot published in Gagné et al. (2026, submitted to ApJ). The bundled release includes 6003 high-quality reduced spectra, matching unbinned SPIFF spectra, per-dataset autotype PNG archives organized by science sample, template CSV products for 47 published standard subtypes, and the regenerated SPIFF machine-readable tables staged for release. Source sample counts reflected in this bundle are: 2050 known ultracool dwarfs, 3008 known photometric candidates, 947 newly identified ultracool dwarfs, and 3739 candidate peculiar, young ultracool dwarfs and subdwarfs.