- echelle grating
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A form of diffraction grating optimized for high orders of diffraction
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echelle grating
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Echelle grating — An echelle grating (from French, échelle , meaning stairs or ladder) is a type of diffraction grating which is characterised by a relatively low grooves density but is optimized for high diffraction orders. Echelle gratings are, like other types… … Wikipedia
Echelle-Gitter — Typisches Echelle Spektrum. Echellegitter sind spezielle Beugungsgitter, die bei hohen Beugungsordungen hohe Intensitäten besitzen. Typischerweise nutzt man Blazegitter mit hohen Blaze Winkeln von ca. 60–75°. Im Gegensatz zu herkömmlichen… … Deutsch Wikipedia
Echelle-Spektrograph — Typisches Echelle Spektrum. Echellegitter sind spezielle Beugungsgitter, die bei hohen Beugungsordungen hohe Intensitäten besitzen. Typischerweise nutzt man Blazegitter mit hohen Blaze Winkeln von ca. 60–75°. Im Gegensatz zu herkömmlichen… … Deutsch Wikipedia
echelle — noun An echelle grating … Wiktionary
echelle — I. āˈshel noun ( s) Etymology: French échelle ladder : a lacing of ribbons on the stomacher of a 17th century costume II. noun ( s) Etymology: French … Useful english dictionary
echelle — noun Etymology: French, literally, ladder, from Old French eschele Date: 1949 a diffraction grating made by ruling a plane metallic mirror with lines having a relatively wide spacing … New Collegiate Dictionary
Diffraction grating — A very large reflecting diffraction grating. In optics, a diffraction grating is an optical component with a periodic structure, which splits and diffracts light into several beams travelling in different directions. The directions of these beams … Wikipedia
Blazed grating — A blazed grating is a special type of diffraction grating used in astronomical telescopes.Blazed gratings produce maximum efficiency at a specified wavelength; that is, a diffraction grating that is blazed at 250nm will operate most efficiently… … Wikipedia
Spectroscopie echelle — Spectroscopie échelle Image d un spectre échelle d une étoile standard prise avec EMMI, au NTT, à l Observatoire de La Silla. Références techniques : Grating#10, Grism#4. La partie rouge du spectre est sur la droite. On voit quelques raies… … Wikipédia en Français
Spectroscopie échelle — Image d un spectre échelle d une étoile standard prise avec EMMI, au NTT, à l Observatoire de La Silla. Références techniques : Grating#10, Grism#4. La partie rouge du spectre est sur la droite. On voit quelques raies spectrales en… … Wikipédia en Français
