Tiedote
Mielenkiintoisia testejä auringon pimennyksen aikana La Sillassa
10. kesäkuuta 2019
2 heinäkuuta 2019 täydellinen auringonpimennys on nähtävillä ESO:n La Sillan observatoriolla Chilessä. Tämän harvinaisen tähtitieteellisen tapahtuman juhlistamiseksi La Silla avaa ovensa tuhannelle vierailijalle. Observatorion normaalit asukkaat jäävät myös paikalle tekemään tähtitieteen havaintoja käyttäen hyödyksi La Sillan erinomaista sijaintia ja paikalla olevia laitteita uusilla tavoilla, luoden harvinaislaatuisia mahdollisuuksia auringonpimennyksen ansiosta.
ESO on hyväksynyt seitsemän hakemusta tähtitieteellisiin havaintoihin joko tutkimuksellisiin tai tiedotustoimintaan auringonpimennyksen aikana. Jotkut ryhmistä käyttävät jo paikalla olevia teleskooppeja La Sillassa, kuten mm. NTT, ExTrA, TAROT ja REM, sekä muita väliaikaisia asetelmia, jotka hyödyntävät La Sillan infrastruktuuria ja resursseja.
Auringonpimennysten hyödyntämisellä tähtitieteen havainnoinnissa on jo pitkä historia ja sillä on tutkittu mm. auringon ilmakehää, sekä esimerkiksi kuuluisaa vahvistusta yleisestä suhteellisuusteoriasta vuonna 1919, jonka teki Eddington. On kuitenkin hyvin harvinaista, että täydellinen auringonpimennys tapahtuu olemassa olevan observatorion kohdalle, jossa on suuria teleskooppeja — itse asiassa viimeisen viidenkymmenen vuoden aikana tämä mahdollisuus on tapahtunut vain kaksi kertaa: vuonna 1961 L’Observatoire de Haute-Provencessa Ranskassa ja vuonna 1991 Mauna Kealla Havaijilla.
Auringonpimennyksen aikana tutkijat havainnoivat eri ilmiöitä aina klassisesta auringonpimennystieteestä, auringon ilmakehän havainnoinnista ja yleisen suhteellisuusteorian testaamisesta hieman erikoisempiin testeihin, kuten ESA:n kanssa tehtävään yhteistyöhön Merkuriuksen exospheren havainnoitsemiseksi, mitä tullaan käyttämään tulevan BepiColombo tehtävän valmisteluihin.
| Ryhmän nimi | Partneri instituutio(t) | Päätavoite |
| CesaR | ESA/ESAC | Tieteelliset havainnot auringon ilmakehästä ja maapallon ionospherestä, kuten myös yleinen havainnointi tiedotustoiminnalle ja koulutukselle |
| ExTrA | IPAG | Testata ExTrA -teleskooppia hyvin erityislaatuisessa kauttakulussa |
| OPC NTT | Institut d'Astrophysique de Paris–CNRS, Sorbonne Universities and Institut d’Astrophysique Spatiale/Université Paris-Sud | Spektograafinen mittaus NTT:llä auringon coronasta, kuten myös coronan nopea kuvaaminen pienellä teleskoopilla. NTT:n havainnot kehittävät mittauksia, joita tehtiin vuonna 1991 Mauna Kealla, Havaijilla. |
| PACA_SolPol19 | Space Science Institute | Lineaarisen polarisaation mittaaminen auringon K-coronasta ja auringonpimennyksen tiedotustoiminta. |
| REM | INAF | Auringonpimennyksen kuvaaminen REM:llä eri aallonpituuksilla ja hetkillä. Havaintoja tullaan käyttämään Italian teleskooppien tunnettuvuuden parantamisessa. |
| TAROT | IRAP | Uusinta Eddingtonin testistä, jossa testattiin yleisen suhteellisuusteorian ennustuksia. |
Yhteystiedot
Lars Lindberg Christensen
ESO Head of Outreach Initiatives
Garching bei München, Germany
Tel: +49 89 3200 6761
Cell: +49 173 38 72 621
Email: lars@eso.org
Tiedotteesta
| Tunnistus: | ann19031 |
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