Space Science School and Radar School

The EISCAT Scientific Association participates in this year's Space Science School, in Sanya, China, 10-19 October 2018. The school is organised by the International Space Science Institute Beijing (ISSI) and the Asia-Pacific Space Co-operation Organisation (APSCO). Embedded in the school, there will be an EISCAT incoherent scatter radar school.

The school is sponsored by the Chinese Academy of Sciences (CAS), the National Space Science Center, CAS (NSSC), the Sanya Institute of Remote Sensing (RADI), and the Chinese Research Institute for Radiowave Propagation (CRIRP). CRIRP is an associate of EISCAT.

For more information and registration, please visit the school's web site.

Deadline: 31st July 2018.

Tuleva revontulikausi

Klikkaamalla saa parempi kartta.

Meille tulivat jo ensimmäiset kysymykset milloin voidaan katsoa taas revontulet. Vastaus riippuu leveysasteesta. Etelässä pimeys palautuu aikaisemmin kuin pohjoisessa.

Kuinka pimeää pitäisi olla? SGO:n tieteelliset kamerat toimivat kun aurinko on vähintään 10° horisontin alapuolella. Toki on mahdollista nähdä erittäin kirkkaat revontulet jo ennen sitä.

Yllä oleva kartta näyttää minä päivänä aurinko on kesän jälkeen ensimmäistä kerta 10° horisontin alapuolella Suomessa. Kannattaa muistaa, että kesäaikana yön pimein aikaa on klo 01 ympäri.

Meidän tieteelliset revontulikamerat eivät ole vältämättä näinä päivinä alkamassa mittauksinsa operatiivisista syistä.

Kartta ja teksti: Thomas Ulich, SGO.

Start of the Northern Lights Season

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Almost three weeks after the summer solstice, we start to get questions regarding when the Northern Lights can be seen again after the Polar Day. The answer depends on where you are: the further south you are, the earlier it will get dark enough.

How dark does it need to be? Our scientific cameras operate when the Sun is at least 10° below the horizon. However, if there are particularly bright Northern Lights, you might be able to see them already earlier.

The map above shows the days on which the Sun will be at least 10° below the horizon in Finland. Be aware, however, that due to summer time (daylight saving time), the darkest time of the night is around 01:00h in Finland.

Note further, that our scientific cameras will not necessarily be back on location on the first day that it is dark enough. Their annual maintenance might well delay the schedule.

Map and text: Thomas Ulich, SGO.