- photometric standard
- фотометрический эталон
Англо-русский словарь по полиграфии и издательскому делу. 2013.
photometric standard
Смотреть что такое "photometric standard" в других словарях:
photometric standard — fotometrinis etalonas statusas T sritis fizika atitikmenys: angl. photometric standard vok. photometrisches Normal, n rus. фотометрический эталон, m pranc. étalon photométrique, m … Fizikos terminų žodynas
Photometric standard stars — are a series of stars that have had their light output in various passbands of photometric system, measured very carefully. Other objects can be observed using CCD cameras or photoelectric photometers connected to a telescope, and the flux , or… … Wikipedia
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
Standard illuminant — A standard illuminant is a profile or spectrum of visible light which is published in order to allow images or colors recorded under different lighting to be compared.CIE illuminantsThe International Commission on Illumination (usually… … Wikipedia
Standard candle — Candle Can dle, n. [OE. candel, candel, AS, candel, fr. L. candela a (white) light made of wax or tallow, fr. cand[ e]re to be white. See {Candid}, and cf. {Chandler}, {Cannel}, {Kindle}.] 1. A slender, cylindrical body of tallow, containing a… … The Collaborative International Dictionary of English
violle standard — ˈvyȯl noun or violle ( s) Usage: usually capitalized V Etymology: after Jules Violle died 1923 French physicist : a photometric unit that is the luminous intensity of a square centimeter of platinum at the temperature of solidification and… … Useful english dictionary
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
Color–color diagram — In astronomy, color–color diagrams are a means of comparing the apparent magnitudes of stars at different wavelengths. Astronomers typically observe at narrow bands around certain wavelengths, and objects observed will have different brightnesses … Wikipedia
Stellar classification — In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are… … Wikipedia
North polar sequence — The North polar sequence is a group of 96 stars that was used to define stellar magnitudes and colors. The cluster of stars lies within two degrees of the Northern Celestial pole, which makes them visible to everyone on the northern hemisphere.… … Wikipedia
