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İzahA Taste of ESPRESSO.jpg
English: The huge diffraction grating at the heart of the ultra-precise ESPRESSO spectrograph — the next generation in exoplanet detection technology — is pictured undergoing testing in the cleanroom at ESO Headquarters in Garching bei München, Germany.
Engineers at ESO have recently completed the difficult process of aligning the grating. The production and alignment of this component is one of the key ESO contributions to the ESPRESSO project. The grating is the largest ever assembled at ESO, and its length matches the largest echelle grating ever made — the 1.2 x 0.3 metre grating for the HIRES spectrograph at the Keck 10-metre telescope.
After its final alignment, the grating is fixed in a permanent mount. All its components are made of Zerodur (the same material that is used for the mirrors of the VLT) and will require no further adjustments, ever. This mounting technique was pioneered at ESO, and demonstrated to work on earlier instruments.
When installed at ESO’s Paranal Observatory in Chile in 2016, ESPRESSO will combine the light from all four Unit Telescopes of the Very Large Telescope to create a virtual 16-metre aperture telescope. Its diffraction grating will split up the light into its component colours for analysis — spreading the light as a prism does, although relying on a different physical mechanism.
The successor of HARPS — the world’s foremost exoplanet hunter — ESPRESSO will take the search for exoplanets to the next level, allowing astronomers to search for Earth-like planets around nearby stars in the habitable zone [1]. It will have many other science applications, including the search for possible variations in the constants of nature at different times in the life of the Universe, and in different directions, through the study of light from very distant quasars.
Notes
[1] A planet in orbit around a star introduces a small and regular variation in the velocity component as measured along the line of sight (known as the radial velocity) by a distant observer on Earth. This variation can be observed as a “wobble” in the spectrum of the star as the lines shift to and fro about their central position as a result of the Doppler effect. As the planet moves away from the observer, the radial velocity change induces a shift of the star’s spectrum towards longer wavelengths (a redshift) and shorter wavelengths as it moves closer (a blueshift). These tiny shifts in the position of the star’s spectrum on the detector are on the order of a few nanometers, but can nevertheless be measured with ESPRESSO and used to infer the presence of planets.
This media was created by the European Southern Observatory (ESO). Their website states: "Unless specifically noted, the images, videos, and music distributed on the public ESO website, along with the texts of press releases, announcements, pictures of the week, blog posts and captions, are licensed under a Creative Commons Attribution 4.0 International License, and may on a non-exclusive basis be reproduced without fee provided the credit is clear and visible." To the uploader: You must provide a link (URL) to the original file and the authorship information if available.
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The huge diffraction grating at the heart of the ultra-precise ESPRESSO spectrograph — the next generation in exoplanet detection technology — is pictured undergoing testing in the cleanroom at ESO Headquarters in Garching bei München, Germany. Engineers at ESO have recently completed the difficult process of aligning the grating. The production and alignment of this component is one of the key ESO contributions to the ESPRESSO project. The grating is the largest ever assembled at ESO, and its length matches the largest echelle grating ever made — the 1.2 x 0.3 metre grating for the HIRES spectrograph at the Keck 10-metre telescope. After its final alignment, the grating is fixed in a permanent mount. All its components are made of Zerodur (the same material that is used for the mirrors of the VLT) and will require no further adjustments, ever. This mounting technique was pioneered at ESO, and demonstrated to work on earlier instruments. When installed at ESO’s Paranal Observatory in Chile in 2016, ESPRESSO will combine the light from all four Unit Telescopes of the Very Large Telescope to create a virtual 16-metre aperture telescope. Its diffraction grating will split up the light into its component colours for analysis — spreading the light as a prism does, although relying on a different physical mechanism. The successor of HARPS — the world’s foremost exoplanet hunter — ESPRESSO will take the search for exoplanets to the next level, allowing astronomers to search for Earth-like planets around nearby stars in the habitable zone [1]. It will have many other science applications, including the search for possible variations in the constants of nature at different times in the life of the Universe, and in different directions, through the study of light from very distant quasars. Notes [1] A planet in orbit around a star introduces a small and regular variation in the velocity component as measured along the line of sight (known as the radial velocity) by a distant observer on Earth. This variation can be observed as a “wobble” in the spectrum of the star as the lines shift to and fro about their central position as a result of the Doppler effect. As the planet moves away from the observer, the radial velocity change induces a shift of the star’s spectrum towards longer wavelengths (a redshift) and shorter wavelengths as it moves closer (a blueshift). These tiny shifts in the position of the star’s spectrum on the detector are on the order of a few nanometers, but can nevertheless be measured with ESPRESSO and used to infer the presence of planets. More information ESPRESSO (Echelle SPectrograph for Rocky Exoplanet and Stable Spectroscopic Observations) is being developed by a consortium consisting of ESO and seven additional scientific institutes: Centro de Astrofísica da Universidade do Porto (Portugal) Faculdade de Ciências da Universidade de Lisboa, CAAUL&LOLS (Portugal) INAF–Osservatorio Astronomico di Trieste (Italy) INAF–Osservatorio Astronomico di Brera (Italy) Instituto de Astrofísica de Canarias (Spain) Physikalisches Institut der Universität Bern (Switzerland) Université de Genève (Switzerland).
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Fayl Faylin tarixcesi Istifade edilen sehifeler Faylin qlobal istifadesi MetamelumatlarSinaq gosterisi olcusu 800 533 piksel Diger olculer 320 213 piksel 640 427 piksel 1 024 682 piksel 1 280 853 piksel Faylin orijinali 8206 1 280 853 piksel fayl hecmi 208 KB MIME novu image jpeg Bu fayl Vikimedia Commons dadirve diger layihelerde istifade edile biler Faylin tesvir sehifesine get Xulase IzahA Taste of ESPRESSO jpg English The huge diffraction grating at the heart of the ultra precise ESPRESSO spectrograph the next generation in exoplanet detection technology is pictured undergoing testing in the cleanroom at ESO Headquarters in Garching bei Munchen Germany Engineers at ESO have recently completed the difficult process of aligning the grating The production and alignment of this component is one of the key ESO contributions to the ESPRESSO project The grating is the largest ever assembled at ESO and its length matches the largest echelle grating ever made the 1 2 x 0 3 metre grating for the HIRES spectrograph at the Keck 10 metre telescope After its final alignment the grating is fixed in a permanent mount All its components are made of Zerodur the same material that is used for the mirrors of the VLT and will require no further adjustments ever This mounting technique was pioneered at ESO and demonstrated to work on earlier instruments When installed at ESO s Paranal Observatory in Chile in 2016 ESPRESSO will combine the light from all four Unit Telescopes of the Very Large Telescope to create a virtual 16 metre aperture telescope Its diffraction grating will split up the light into its component colours for analysis spreading the light as a prism does although relying on a different physical mechanism The successor of HARPS the world s foremost exoplanet hunter ESPRESSO will take the search for exoplanets to the next level allowing astronomers to search for Earth like planets around nearby stars in the habitable zone 1 It will have many other science applications including the search for possible variations in the constants of nature at different times in the life of the Universe and in different directions through the study of light from very distant quasars Notes 1 A planet in orbit around a star introduces a small and regular variation in the velocity component as measured along the line of sight known as the radial velocity by a distant observer on Earth This variation can be observed as a wobble in the spectrum of the star as the lines shift to and fro about their central position as a result of the Doppler effect As the planet moves away from the observer the radial velocity change induces a shift of the star s spectrum towards longer wavelengths a redshift and shorter wavelengths as it moves closer a blueshift These tiny shifts in the position of the star s spectrum on the detector are on the order of a few nanometers but can nevertheless be measured with ESPRESSO and used to infer the presence of planets Tarix 14 sentyabr 2015 10 00 00Menbe http www eso org public images potw1537a Muellif ESO M Zamani Lisenziya This media was created by the European Southern Observatory ESO Their website states Unless specifically noted the images videos and music distributed on the public ESO website along with the texts of press releases announcements pictures of the week blog posts and captions are licensed under a Creative Commons Attribution 4 0 International License and may on a non exclusive basis be reproduced without fee provided the credit is clear and visible To the uploader You must provide a link URL to the original file and the authorship information if available This file is licensed under the Creative Commons Attribution 4 0 International license Azadsiniz paylasmaq eseri kocurmek paylamaq ve oturmek ucun remiks etmek eseri adaptasiya etmek Asagidaki sertlere riayet etmekle istinad Muvafiq kredit vermelisiniz lisenziyaya bir kecid vermelisiniz ve deyisikliklerin olub olmadigini bildirmelisiniz Bunu her hansi bir aglabatan sekilde ede bilersiniz ancaq lisenziyalasdiricinin sizi ve ya istifadenizi tesdiqlemesini teklif eden bir sekilde deyil https creativecommons org licenses by 4 0 CC BY 4 0 Creative Commons Attribution 4 0 true trueCaptionsazerbaycancaAdd a one line explanation of what this file representsItems portrayed in this filetesvir edircopyright status ingiliscopyrighted ingilislisenziyaCreative Commons Attribution 4 0 International ingilisyaranma tarixi14 sentyabr 2015 Faylin tarixcesi Faylin evvelki versiyasini gormek ucun gun tarix bolmesindeki tarixlere klikleyin Tarix VaxtKicik sekilOlculerIstifadeciSerh indiki09 26 15 sentyabr 20151 280 853 208 KB JmencisomUser created page with UploadWizard Istifade edilen sehifeler Bu sekile olan kecidler Spektroskopiya Faylin qlobal istifadesi Bu fayl asagidaki vikilerde istifade olunur en wikipedia org layihesinde istifadesi Spectroscopy vi wikipedia org layihesinde istifadesi Phổ họcMetamelumatlar Bu faylda fotoaparat ve ya skanerle elave olunmus melumatlar var Eger fayl sonradan redakte olunubsa bezi parametrler bu sekilde gosterilenlerden ferqli ola biler Sekil basligiThe huge diffraction grating at the heart of the ultra precise ESPRESSO spectrograph the next generation in exoplanet detection technology is pictured undergoing testing in the cleanroom at ESO Headquarters in Garching bei Munchen Germany Engineers at ESO have recently completed the difficult process of aligning the grating The production and alignment of this component is one of the key ESO contributions to the ESPRESSO project The grating is the largest ever assembled at ESO and its length matches the largest echelle grating ever made the 1 2 x 0 3 metre grating for the HIRES spectrograph at the Keck 10 metre telescope After its final alignment the grating is fixed in a permanent mount All its components are made of Zerodur the same material that is used for the mirrors of the VLT and will require no further adjustments ever This mounting technique was pioneered at ESO and demonstrated to work on earlier instruments When installed at ESO s Paranal Observatory in Chile in 2016 ESPRESSO will combine the light from all four Unit Telescopes of the Very Large Telescope to create a virtual 16 metre aperture telescope Its diffraction grating will split up the light into its component colours for analysis spreading the light as a prism does although relying on a different physical mechanism The successor of HARPS the world s foremost exoplanet hunter ESPRESSO will take the search for exoplanets to the next level allowing astronomers to search for Earth like planets around nearby stars in the habitable zone 160 1 It will have many other science applications including the search for possible variations in the constants of nature at different times in the life of the Universe and in different directions through the study of light from very distant quasars Notes 1 A planet in orbit around a star introduces a small and regular variation in the velocity component as measured along the line of sight known as the radial velocity by a distant observer on Earth This variation can be observed as a wobble in the spectrum of the star as the lines shift to and fro about their central position as a result of the Doppler effect As the planet moves away from the observer the radial velocity change induces a shift of the star s spectrum towards longer wavelengths a redshift and shorter wavelengths as it moves closer a blueshift These tiny shifts in the position of the star s spectrum on the detector are on the order of a few nanometers but can nevertheless be measured with ESPRESSO and used to infer the presence of planets More information ESPRESSO Echelle SPectrograph for Rocky Exoplanet and Stable Spectroscopic Observations is being developed by a consortium consisting of ESO and seven additional scientific institutes Centro de Astrofisica da Universidade do Porto Portugal Faculdade de Ciencias da Universidade de Lisboa CAAUL amp amp LOLS Portugal INAF Osservatorio Astronomico di Trieste Italy INAF Osservatorio Astronomico di Brera Italy Instituto de Astrofisica de Canarias Spain Physikalisches Institut der Universitat Bern Switzerland Universite de Geneve Switzerland Orijinal tarix ve vaxt10 00 14 sentyabr 2015Proqram teminatiAdobe Photoshop CC 2014 Windows Unique ID of original documentF4F85D98AF2853D470E90D5D9022DB8DTemin ediciESO M ZamaniMenbeEuropean Southern ObservatoryQisa basliqA Taste of ESPRESSOAcar sozlerESPRESSOElaqe melumatihttp www eso org Karl Schwarzschild Strasse 2Garching bei Munchen D 85748 GermanyIstifade qaydasiCreative Commons Attribution 3 0 Unported license IIM versiya4 Menbe https az wikipedia org wiki Fayl A Taste of ESPRESSO jpg, wikipedia, oxu, kitab, kitabxana, axtar, tap, hersey,
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