Planoucí nebe nad Paranalem
Viděli jste někdy červenější západ slunce? Pravděpodobně ne, protože příčinou intenzivního zbarevní oblohy je něco docela dramatického: sopečná erupce. Tento Obrázek týdne byl pořízen na ESO observatoři Paranal v Chile; pod Mléčnou dráhou, na vrcholu temné siluety hory Cerro Paranal, hledí k obloze ESO dalekohled VLT (Very Large Telescope).
Dne 15. ledna 2022 vybuchla v jižní části Tichého oceánu podmořská sopka Hunga Tonga-Hunga Ha'apai. Tato erupce vytvořila rázové vlny, které se rozlétly atmosférou a dosáhly do míst daleko od samotné sopky. Na observatořích ESO Paranal a La Silla v Chile, vzdálených více než 10 000 kilometrů, meteorologické stanice tyto atmosférické poruchy zaznamenaly.
Erupce také vyvrhla do atmosféry sloupec popela vysoký 57 kilometrů a uvolnila obrovské množství částic, včetně vodní páry a prachu. Drobné prachové částice rozptylují sluneční světlo a způsobují jeho zčervenání. Tento efekt byl zachycen i na kalibračních snímcích pořízených za soumraku několika dalekohledy ESO. Na tomto Obrázku týdne, pořízeném 6 měsíců po erupci, je vidět, že efekty prachových částic z erupce rozhodně nebyly krátkodobé. V době psaní tohoto článku, o rok později, se obloha stále nevrátila do stavu před erupcí.
Kredit:ESO/F. Selman
O snímku
Id: | potw2320a |
Jazyk: | cs |
Typ: | Fotografický |
Datum zveřejnění: | 15. května 2023 6:00 |
Velikost: | 8288 x 5520 px |
O objektu
Jméno: | Cerro Paranal |
Typ: | Unspecified : Sky Phenomenon : Light Phenomenon |
Image Formats
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