broad band photometry

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• photometry — photometric /foh teuh me trik/, photometrical, adj. photometrist, photometrician /foh teuh me trish euhn/, n. /foh tom i tree/, n. 1. the measurement of the intensity of light or of relative illuminating power. 2. the science dealing with such… …   Universalium

• Photometry (astronomy) — Photometry is a technique of astronomy concerned with measuring the flux , or intensity of an astronomical object s electromagnetic radiation. Usually, photometry refers to measurement over large wavelength bands of radiation; but, when not only… …   Wikipedia

• Light pollution — This article is about light pollution in the visible spectrum. For information on pollution in the radio spectrum, see radio spectrum pollution. This time exposure photo of New York City at night shows skyglow, one form of light pollution …   Wikipedia

• List of astronomy acronyms — This is a compilation of acronyms commonly used in astronomy. Most of the acronyms are drawn from professional astronomy and are used quite frequently in scientific publications. However, a few of these acronyms are frequently used by the general …   Wikipedia

• NGC 300 — An ultraviolet image of NGC 300 taken by the Galaxy Evolution Explorer (GALEX) Observation data (J2000 epoch) C …   Wikipedia

• NASA Infrared Telescope Facility — The NASA Infrared Telescope Facility atop Mauna Kea …   Wikipedia

• Cosmic infrared background — (CIB) is a mysterious infrared light coming from outer space. It is slowly being resolved into specific sources by infrared telescopes. In some ways it is analogous to the cosmic microwave background, but at shorter wavelengths. Contents 1… …   Wikipedia

• Optics — For the book by Sir Isaac Newton, see Opticks. Optical redirects here. For the musical artist, see Optical (artist). Optics includes study of dispersion of light. Optics is the branch of …   Wikipedia

• Eta Carinae — Starbox begin name=Eta CarinaeStarbox image caption=Hubble Space Telescope image showing Eta Carinae and the bipolar Homunculus Nebula which surrounds the star. The Homunculus was partly created in an eruption of Eta Carinae whose light reached… …   Wikipedia

• OSIRIS — For other uses, see Osiris (disambiguation). OSIRIS is the name of three entirely separate astronomical instruments. The duplication of names is coincidental, partly driven by two scientific teams trying to make acronyms using similar words.… …   Wikipedia

• magnitude — magnitudinous /mag ni toohd n euhs, tyoohd /, adj. /mag ni toohd , tyoohd /, n. 1. size; extent; dimensions: to determine the magnitude of an angle. 2. great importance or consequence: affairs of magnitude. 3. greatness of size or amount. 4.… …   Universalium