Snelle voortgang bij de ELT
De bouw van 's werelds grootste oog op de hemel, de ESO’s Extremely Large Telescope (ELT) op de top van Cerro Armazones in de Chileense Atacama-woestijn vordert. Zoals deze Foto van de Week, genomen in oktober dit jaar laat zien, is de betonnen constructie die in januari vorm begon te krijgen bijna voltooid. Deze constructie zal de 85 meter hoge stalen koepel ondersteunen en in de komende weken klaar zijn voor de installatie van 36 mechanismen die de 360° rotatie van de 6100 ton zware koepelconstructie mogelijk zullen maken.
Aan de rechterkant van de foto zijn de funderingen van het koelstation duidelijk zichtbaar. Dit station is een van de vele voorzieningen die zijn ontworpen om de telescoop overdag te koelen, zodat hij 's nachts dezelfde temperatuur heeft als zijn omgeving; dit is een absolute voorwaarde om turbulentie in de koepel en thermische vervormingen van de telescoop tot een minimum te beperken. In het midden van deze foto zijn de funderingen te zien voor de hoofdstructuur die de telescoop en zijn instrumenten in de koepel zal herbergen, met een totaal gewicht van 4600 ton. Er was bijna 9000 kubieke meter beton nodig om de funderingen te voltooien, waarin al enkele van de modernste seismische voorzieningen zijn aangebracht.
Verschillende kranen, met een capaciteit van 250 tot 600 ton, zijn al operationeel en helpen bij de bouw van deze betonconstructies. Met name de kraan helemaal links op de foto zal nodig zijn om zowel de koepel als de hoofdstructuur te monteren. Deze kraan, die bijna 120 m hoog is en tot 80 m ver kan reiken, is van kilometers ver zichtbaar en illustreert hoe extreem groot de ELT zal zijn.
Credit:G. Hüdepohl (atacamaphoto.com)/ESO
Over de afbeelding
| Id: | potw2248a |
| Taal: | nl |
| Type: | Fotografisch |
| Publicatiedatum: | 28 november 2022 06:00 |
| Gerelateerde mededelingen: | ann23005 |
| Grootte: | 5464 x 3640 px |
Over het object
| Naam: | Extremely Large Telescope |
| Type: | Unspecified : Technology : Observatory : Telescope |
Afbeeldingstypen
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