File:Lunette astronomique simplifiee principe.svg

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Lunette_astronomique_simplifiee_principe.svg‎ (SVG file, nominally 336 × 127 pixels, file size: 12 KB)

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Description	English: Principle of a simplified refracting telescope with convergent ocular: the parallel light beam from the point B (at the infinite) are concentrated in the focal plane of a convergent lens L₁, the objective; this gives a magnified image B′; this image is in the focal plane of a convergence lens L₂, the occular, so the image is at the "infinite" (it is more confortable for the eye, modeled here by a convergent lens); the yellow area show the beam of light that goes from the point B to the eye, the green lines show how to build the images Français : Principe d'une lunette astronomique simplifiée à oculaire convergent : le faisceau parallèle issu du point B, à l'infini, est concentré dans le plan focal d'une lentille convergente L₁, l'objectif ; cela donne une image agrandie B′ ; cette image est dans le plan focal d'une lentille convergente L₂, l'occulaire, afin que l'image se forme « à l'infini » (ce qui est plus confortable pour l'œil, modélisé ici par une lentille convergente) ; la surface jaune montre le faisceau lumineux qui va du point B au fond de l'œil, les traits verts sont les traits de construction permettant de déterminer l'image
Date	13 March 2007(2007-03-13)
Source	Own work
Author	Christophe Dang Ngoc Chan (cdang)
Permission (Reusing this image)	PD
Other versions	Image:Lunette_astronomique_simplifiee_et_oeil_nu.svg

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	09:30, 14 March 2007		336×127 (12 KB)	Cdang (Talk \| contribs)	(eye more centered, one additional construction line)
	14:13, 13 March 2007		336×144 (11 KB)	Cdang (Talk \| contribs)	(== Summary == {{Created with Inkscape}} {{Information \|Description={{en\|Principle of a simplified refracting telescope with convergent ocular:<br /> the parallel light beam from the point ''B'' (at the infinite) are concentrated in the focal plane of a )