ALMA overschaduwd door bergtoppen
Op het eerste gezicht lijkt dit een paranomafoto te zijn van het berglandschap van de Chileense Chajnantor-hoogvlakte, met sneew en ijs verspreid over het dorre terrein. De belangrijkste bergtoppen van rechts naar links gezien zijn Cerro Chajnantor, Cerro Toco, Juriques en de opvallende kegelvormige vulkaan Licancabur (zie potw1240) – op zichzelf al indrukwekkend! De echte sterren op deze foto zijn de minutieuze, bijna onzichtbare structuren in het midden van de afbeelding – waarneembaar als je lang genoeg tuurt.
Deze structuren, die overschaduwd worden door de nabije bergen, zijn de antennes die de Atacama Large Millimeter/submillimeter Array (ALMA) vormen. ALMA is een grote radiotelescoop. Hoewel het in dit panorama minutieus lijkt bestaat de array uit een groep van grote 12- en 7-meter diameter antennes. Wanneer de array compleet is bestaat de groep uit 66 antennes die op de hoogvlakte verspreid staan over afstanden tot 16 kilometer. Het constructiewerk van ALMA wordt waarschijnlijk afgerond in 2013, maar de telescoop is al begonnen aan de eerste fase van 'Early Science'-observaties, met indrukwekkende resultaten (zie bijvoorbeeld eso1239). Sinds deze foto is genomen zijn veel meer antennes toegevoegd aan de groep op de hoogvlakte.
ALMA, een internationale sterrenkunde faciliteit, is een samenwerkingsverband tussen Europa, Noord-Amerika en Oost-Azië, in samenwerking met de Republiek Chili. De bouw en het beheer van ALMA staan namens Europa onder leiding van ESO, namens Noord-Amerika van het National Radio Astronomy Observatory (NRAO) en namens Oost-Azië door de National Astronomical Observatory van Japan (NAOJ). De Joint ALMA Observatory (JAO) ziet toe op de bouw, de ingebruikname en het beheer van ALMA. Links Meer over ALMA bij ESO Gezamenlijke ALMA Observatoria
Links
Credit:ALMA (ESO/NAOJ/NRAO)
Over de afbeelding
| Id: | potw1302a |
| Taal: | nl-be |
| Type: | Fotografisch |
| Publicatiedatum: | 14 januari 2013 10:00 |
| Grootte: | 5212 x 3468 px |
Over het object
| Naam: | Atacama Large Millimeter/submillimeter Array |
| Type: | Solar System : Planet : Feature : Surface : Mountain |
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