Seestar Instrumentation: Code and Data

Code, calibration products and raw frames behind "Characterizing the ZWO Seestar S30 Pro as a Multi-Modal Astronomical Instrument" (Dai and Dai), prepared for Publications of the Astronomical Society of the Pacific. Photometry, astrometry, spectroscopy and polarimetry of a ZWO Seestar S30 Pro from Vancouver, British Columbia, measured on frames recorded in 2026 July, August and September, with the reduction code and every calibration product it wrote, including the instrument constants file the paper's tables are built from. This initial deposit holds a README; the frames, code and products are added before publication. Code is MIT licensed; data and frames are CC BY 4.0.