Stjerneklar nat over La Silla
Et klart stjernetæppe udgør baggrunden i dette smukke billede taget af astronomen Håkon Dahle. Silhuetten der ses i forgrunden er Håkon selv, der er omgivet af et par af de store mørke kupler, der er spredt over bjerget hvor ESOs La Silla-observatorium ligger.
Mange professionelle astronomer er også ivrige fotografer - og hvem kan ikke forstå det? ESOs faciliteter i Atacamaørkenen er blandt de bedste steder i verden, når man ønsker at observere stjernerne, og af samme grund er det fantastiske steder at tage billeder af nattehimlen.
Håkon tog disse billeder mens han var på en uges observationstid på MPG/ESO 2,2-meter teleskopet. I løbet af denne tid blev teleskopet til tider betjent af et andet observationshold, hvilket gav Håkon mulighed for at beundre den stjerneklare nat - og samtidig tage billeder som resten af os kan se.
Mælkevejen er mere klar i syd for ækvator end her nordpå, grundet den måde Jordens sydlige områder peger ind mod det tætte galaksecentrum. Men selv mod syd er Mælkevejen ret utydelig på himlen. Lysforurening fra byerne, og lyset fra Månen gør det umuligt for de fleste af os at se den svage glød fra galaksen.
'Et af de bedste ting ved La Silla-observatioriet er, at den ligger langt væk fra byens forstyrrende lys, hvilket gør at der her findes en af de mørkeste nattehimler på Jorden. Atmosfæren er samtidig meget klar, så dit udsyn bliver ikke slørret. Himlen over La Silla er så mørk, at det er muligt at se sin skygge i lyset fra Mælkevejen.
Håkon indsendte dette billede til Your ESO Pictures Flickr gruppen. Flickr gruppen gennemgås regelmæssigt, og de bedste billeder udvælges til at være et af vores populære Ugens Billeder, eller til at optræde i vores galleri.
Kilde:ESO/H. Dahle
Om billedet
| Id: | potw1333a |
| Sprog: | da |
| Type: | Foto |
| Udgivelsesdato: | 19. august 2013 10:00 |
| Størrelse: | 4211 x 2832 px |
Om objektet
| Type: | Unspecified : Sky Phenomenon : Night Sky |
Billedformater
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