Ein kaleidoskopischer Blick auf das ELT
Das heutige Bild der Woche ist eine Montage von höchster Präzision: Boris Häußler, Astronom bei der ESO in Chile, musste die Aufnahmen genau planen, um die Kuppel des Extremely Large Telescope (ELT) der ESO perfekt vor Sonne und Mond einzufangen.
Über einen Zeitraum von vier Jahren hat Boris seine Aufnahmen zeitlich genau abgestimmt: Er wählte den perfekten Blickwinkel vom Cerro Paranal aus, dem Standort des Very Large Telescope (VLT) der ESO, um die Sonne und den Mond direkt hinter dem ELT auf dem Cerro Armazones, etwa 20 km entfernt, aufgehen zu sehen. Das Zeitfenster für ein solches Bild ist unglaublich klein: Aufgrund der Umlaufbahn der Erde um die Sonne und der Umlaufbahn des Mondes um die Erde ändert sich der Punkt, an dem Sonne und Mond aufgehen, jeden Tag. Das bedeutet, dass Fotos wie diese nur an wenigen Tagen im Jahr möglich sind. Es dauert nur wenige Sekunden, bis Sonne und Mond hinter dem ELT verschwinden, und wenn man diesen Moment verpasst, ist die Chance auf das perfekte Foto vertan. Aber mit Engagement und sorgfältiger Planung gelang es Boris, den Bau der ELT-Kuppel über die Jahre hinweg zu dokumentieren.
Seit dem Bild aus dem Jahr 2021, als das Fundament gerade erst gelegt worden war, ist die Kuppel des ELT erheblich gewachsen, angefangen vom Aufbau der Skelettstruktur, die später mit einer Schutzverkleidung versehen wurde, bis hin zur Installation der Spalttore auf dem aktuellsten Bild vom August 2025. Im Inneren der Kuppel nimmt auch die Hauptstruktur des Teleskops Gestalt an. Der Bau des ELT ist ein Projekt, bei dem absolute Präzision und höchste Disziplin eine große Rolle spielen – vergleichbar mit der akribischen Planung und Ausdauer, die erforderlich sind, um seinen Fortschritt in dieser Bilderserie zu dokumentieren.
Links
- Bild vom 20. Oktober 2021
- Bild vom 15. April 2023
- Bild vom 28. August 2023
- Bild vom 28. Januar 2024
- Bild vom 4. September 2024
- Bild vom 14. April 2025
- Bild vom 24. August 2025
B. Häußler/ESO
Über das Bild
| ID: | potw2537a |
| Sprache: | de-at |
| Typ: | Fotografisch |
| Veröffentlichungsdatum: | 15. September 2025 06:00 |
| Größe: | 3460 x 3460 px |
Über das Objekt
| Name: | Extremely Large Telescope, Moon, Sun |
| Typ: | Unspecified : Sky Phenomenon : Light Phenomenon : Sunrise-Sunset Unspecified : Technology : Observatory |
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