photometric measurements

См. также в других словарях:

• Photometric system — In astronomy, a Photometric system is a set of well defined passbands (of filters), with a known sensitivity to incident radiation. The sensitivity usually depends on the optical system, detectors and filters used. For each photometric system a… …   Wikipedia

• Photometric redshift — A photometric redshift is an estimate for the distance of an astronomical object, such as a galaxy or quasar. The technique uses photometry (that is, the brightness of the object viewed through various standard filters, each of which lets through …   Wikipedia

• The Swift UVOT Photometric System — The Ultraviolet and Optical Telescope (UVOT) on the Swift Gamma Ray Burst Mission observes astronomical objects in its 17 by 17 arc minute field of view through one of several filters or grisms. The seven filters, which are similar to those on… …   Wikipedia

• UBV photometric system — UBV photometric system, also called the Johnson system (or Johnson Morgan system), is a wide band photometric system for classifying stars according to their colors. It is first known standardized photoelectric photometric system. The letters U,… …   Wikipedia

• 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

• Vega — Starbox begin name=Vega Starbox image caption = Location of Vega in the constellation Lyra. Starbox observe epoch=J2000.0 constell=Lyra ra=RA|18|36|56.3364cite web author=Staff date=October 30, 2007 url=http://simbad.u strasbg.fr/simbad/sim… …   Wikipedia

• Photometry (optics) — This article deals with the usage of this term in optics and lighting .Photometry is the science of measurement of light, in terms of its perceived brightness to the human eye. It is distinct from radiometry, which is the science of measurement… …   Wikipedia

• Lighting — Not to be confused with lightning. For other uses, see lighting (disambiguation). Low intensity lighting and haze in a concert hall allows laser effects to be visible …   Wikipedia

• HD 209458 b — Extrasolar planet List of extrasolar planets Size comparison of HD 209458 b with Jupiter. Parent star Star …   Wikipedia

• Telluric contamination — is contamination of the astronomical spectra by the Earth s atmosphere. Interference with astronomical observationsMost astronomical observations are conducted by measuring photons (electromagnetic waves) which originate beyond the sky. The… …   Wikipedia

• Magnitude (astronomy) — For other uses, see Magnitude (disambiguation). Magnitude is the logarithmic measure of the brightness of an object, in astronomy, measured in a specific wavelength or passband, usually in optical or near infrared wavelengths. Contents 1… …   Wikipedia