Sov gott, ELT!
Att växa är ett hårt jobb – och denna veckas bild, tagen 3 april 2024, visar ESO:s Extremely Large Telescope (ELT) under en välförtjänt nattvila. Utsikten från insidan av teleskopets kupol visar framstegen som görs på denna gigantiska struktur, 80 meter hög och 88 meter bred, som kommer att skydda “världens största öga mot himlen” från den extrema miljön i Chiles Atacamaöken.
Kupolens stålskelett är komplett, och en skyddande isolerad beklädnad – de mörkblå panelerna i bilden – läggs nu på den. Denna beklädnad består av olika lager, bland annat värmeisolering och utanpåliggande aluminiumplåt. Denna tillsammans med luftkonditioneringen – som är aktiv under dagen, när kupolen är stängd – kommer att hålla luften inne i kupolen vid samma temperatur som omgivningen, vilket minimerar turbulens som annars skulle göra bilderna som ELT tar suddiga.
I mitten av bilden ses azimutstrukturen på ett separat betongfundament som isolerar den från vibrationer som fortplantar sig genom marken från kupolen. Fundamentet kommer att bära teleskopet och dess uppsättning av vetenskapliga instrument.
Just nu kan ELT-strukturen njuta av en fantastisk utsikt över Vintergatan under sin nattliga vila. I framtiden kommer dock teleskopet att arbeta nattetid, men kommer att ha tillgång till samma vy när kupolen öppnar sin stora spalt för att ge teleskopet åtkomst till himlen.
Länk
Källa:B. Häußler/ESO
Om bilden
| ID: | potw2421a |
| Språk: | sv |
| Typ: | Foto |
| Publiceringsdatum: | 20 maj 2024 06:00 |
| Storlek: | 12660 x 7899 px |
Om objektet
| Namn: | Extremely Large Telescope |
| Typ: | Unspecified : Technology : Observatory : Telescope |
Bildformat
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