This article is about the echelle spectrograph. For other uses, see Espresso (disambiguation).
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ESPRESSO spectrograph concept at the Preliminary Design Review.ESPRESSO spectrograph optical design at the Preliminary Design Review.ESPRESSO successfully made its first observations in November 2017.
ESPRESSO (Echelle Spectrograph for Rocky Exoplanet- and Stable Spectroscopic Observations)[1] is a third-generation, fiber fed, cross-dispersed, echelle spectrograph mounted on the European Southern Observatory's Very Large Telescope (VLT). The unit saw its first light with one VLT in December 2017 and first light with all four VLT units in February 2018.[2]
ESPRESSO is the successor of a line of echelle spectrometers that include CORAVEL, Elodie, Coralie, and HARPS. It measures changes in the light spectrum with great sensitivity, and is being used to search for Earth-size rocky exoplanets via the radial velocity method. For example, Earth induces a radial-velocity variation of 9 cm/s on the Sun; this gravitational "wobble" causes minute variations in the color of sunlight, invisible to the human eye but detectable by the instrument.[3] The telescope light is fed to the instrument, located in the VLT Combined-Coude Laboratory 70 meters away from the telescope, where the light from up to four unit telescopes of the VLT can be combined.
^"ESO - Espresso". Retrieved 2012-10-24.
^"ESPRESSO". eso.org. Retrieved 8 April 2024.
^"ESPRESSO - Searching for other Worlds". Centro de Astrofísica da Universidade do Porto. 2010-10-16. Archived from the original on 2010-10-17. Retrieved 2010-10-16.
Espresso (/ɛˈsprɛsoʊ/ , Italian: [eˈsprɛsso]) is a coffee-brewing method in which a small amount of nearly boiling water is forced under pressure through...
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ESPRESSO (Echelle Spectrograph for Rocky Exoplanet- and Stable Spectroscopic Observations) is a third-generation, fiber fed, cross-dispersed, echelle spectrograph...
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method of preparing coffee created by pouring microfoam into a shot of espresso and resulting in a pattern or design on the surface of the latte. It can...
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(/ˈlɑːteɪ, ˈlæteɪ/) in English, is a coffee drink of Italian origin made with espresso and steamed milk, traditionally served in a glass. Variants include the...
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foam known as afrógala (Greek: αφρόγαλα) and freddo espresso which is a double shot of espresso blended with ice cubes and served over ice. In Italy...
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methods soak a column of grounds, such as pour-over, espresso, and percolation. In the espresso method, water can saturate the column unevenly from bottom...
coffee beverage made by using an espresso machine to make an Italian-style coffee – short black (a single espresso shot) with more water (generally twice...
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