lente acromática

lente acromática

Lens (or combination of lenses) that brings different wavelenghts within a ray of light to a single focus, thus overcoming chromatic aberration. It was first successfully made by Joseph von Fraunhofer.

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Industrie/Domein: Astronomy
Category: General astronomy
Company: Caltech
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acromática

Arts & crafts; Fine art

Negro, blanco y los grises. Obra que se ejecuta sin color.

lente

Photography; Professional photography

elemento óptico hecho de vidrio o de plástico capaz de concentrar luz. Un lente puede ser construido con elementos individuales o múltiples.

Sistema de Procesado de imágenes astronómicas

Astronomy; General astronomy

Developed by the National Radio Astronomy Observatory.

órbita

Astronomy; General astronomy

The path of one object about another (used here for an object orbiting the sun).

meteoros

Astronomy; General astronomy

Small rocky and/or icy particles that are swept up by the earth in its orbit about the sun. Also called "shooting stars", they travel across the sky in a very short time, from ...

equinoccio

Astronomy; General astronomy

Either of the two points (vernal, autumnal) on the celestial sphere where the ecliptic (which is the apparent path of the sun on the sky) intersects the celestial equator. Due to ...

cometa

Astronomy; General astronomy

A celestial body orbiting the sun (though some may be ejected from the solar system by planetary perturbations) that displays (at least during a portion of its orbit) some ...

cenit

Astronomy; General astronomy

The point directly overhead in the sky.

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Industrie/Domein: Water bodies Category: Lakes

Lago Hurón

The second largest of the Great Lakes of North America, bounded on the west by Michigan (U. S. ) and on the north and east by Ontario (Can. ). The ...