Stellar photometry is a research area in observational astrophysics focused on precise measurement and analysis of the fluxes and magnitudes of stars across different wavelength bands. It encompasses instrumental calibration, transformation between instrumental and standard photometric systems, and correction for atmospheric and interstellar extinction. Stellar photometry underpins studies of stellar variability, pulsation, eclipsing binaries, exoplanet transits, and stellar populations in star clusters and galaxies. Modern stellar photometry integrates CCD and infrared array imaging, time-series analysis, and statistical techniques to derive fundamental stellar parameters such as luminosity, effective temperature, and radius, often in conjunction with spectroscopic and astrometric data.
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