Photometry (astronomy)
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In astronomy, photometry, from Greek photo- and -metry, is a technique used in astronomy that is concerned with measuring the flux or intensity of light radiated by astronomical objects. This light is
Kepler Mission space photometer
AERONET photometer
Apparent magnitude
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Apparent magnitude is a measure of the brightness of a star, astronomical object or other celestial objects like artificial satellites. Its value depends on its intrinsic luminosity, its distance, and
Photometry (astronomy)
…effect. When calibrated against standard stars (or other light sources) of known intensity and colour, photometers can measure the brightness or apparent magnitude of celestial objects. The methods used to perform photometry depend on the wavelength region under study. At its most basic, photometry is conducted…
Asteroid 65 Cybele and two stars in the constellation Aquarius, with their magnitudes labeled
Image of 30 Doradus taken by ESO's VISTA. This nebula has a visual magnitude of 8.