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Spectrograph laser comb, artwork

Spectrograph laser comb, artwork

C009/3106

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Credit

EUROPEAN SOUTHERN OBSERVATORY / SCIENCE PHOTO LIBRARY EUROPEAN SOUTHERN OBSERVATORY / SCIENCE PHOTO LIBRARY

Restrictions:

This image may not be used by or to promote the arms, nuclear power or tobacco industries or any religious organisation, or in any discriminatory way, or to imply the endorsement by ESO of any product, service or activity.

Caption

Spectrograph laser comb. Artwork of equipment needed for increasingly precise future spectroscopic analysis. This equipment is known as the laser comb, and will be used as a 'ruler' to calibrate spectrographs that will be used to search for Earth-like planets or measure the expansion of the Universe. Light from the Sun (upper left) is coupled to an optical fibre (wavy line) that guides it to a spectrograph (prism, lower right) that splits it into a spectrum (bottom) with spectral lines (dark peaks). The bright (white) spectral lines of the pulsed laser (also known as an astro-comb) help to filter the light and are used to calibrate the equipment.Restrictions:.

Release details

Model release not required. Property release not required.

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