Sunday, 8 June 2014

Using the snowmobile... in June!

This week just gone, we've been extending the reindeer fence... vertically. Due to the depth of the snow in this last season it has been possible for reindeer (and elk!) to get into the KAIRA compound. Therefore, we've gone around the entire perimeter and have added some additional height to all the fence posts. We'll be stringing out some additional wire later.

In order to get this work done, we've brought a snowmobile to the site. Why? Because there was at least a little bit of snow left and any excuse will do to use the observatory snowmobile.

The snowmobile arrives (Photo: D. McKay-Bukowski)

Loading up the snowmobile and trailer. (Photo: D. McKay-Bukowski)

Patrolling the perimeter fence. (Photo: D. McKay-Bukowski)

Friday, 6 June 2014

More storm damage revealed

As the snow recedes we are find more and more horrors from the great blizzard of 2014. In addition to destroyed fencing etc., there appears to be a lot of array damage that was hitherto hidden. Perhaps the most surprising was finding a broken staafje (a small white fibreglass rod that joins the S-haakje to the HBA tile cover. The fact that this broke is pretty amazing as they are very strong.

Collapsed cell in Tile H65. (Photo: D. McKay-Bukowski)

Broken staafje(!) and S-haakje. (Photo: D. McKay-Bukowski)

Shattered frame on the LBA cable mausoleum. (Photo: D. McKay-Bukowski)

Collapsed LBA aerial #L05. (Photo: D. McKay-Bukowski)

Destroyed LBA aerial #L34. (Photo: D. McKay-Bukowski)

Thursday, 5 June 2014

Swimming? Anyone?

Time for a nice photograph. This week we've had Joona Keskitalo on site, which means some good photography is beound to ensue. Joona posted this photograph on Twitter a couple of days ago, but it is so good, we're featuring it today. The shot is taken from the jetty at the shoreline near the Biological Station operated by the University of Helsinki. This is where we stay when working at the KAIRA site. This time last year, the ice had started to break (and yes, we were swimming), but its a bit colder this year... didn't stop some of us from swimming though! (Click on the image to enlarge it.)


The icy surface of Kilpisjärvi (Photo: J. Keskitalo)

Wednesday, 4 June 2014

Snow situation at KAIRA

Hey! We're back on site again. Normally a very joyful occasion (this is, after all, the coolest LOFAR site on the planet), however this time it was marred by the fact that the receding snow is showing up more and more damage from the great blizzard of 2014.

Still, there is a quite a lot of snow to been seen, as these photographs show (taken on the evening of 02-Jun-2014).

Snow banks along the storage containers. These are
over 1,5m tall in places. (Photo: D. McKay-Bukowski)

Looking out over the lower field. Rivulets of water
are everywhere now. (Photo: D. McKay-Bukowski)

The gully behind the barracks. (Photo: D. McKay-Bukowski)

Fortunately, with this quantity of snow, there are no mosquitoes... yet.

Tuesday, 3 June 2014

Visitors from Ettus Research and National Instruments at SGO

Yesterday we had Matt Ettus from Ettus Research and Leif Johansson from National Instruments visiting SGO. We had a one-day meeting on mainly EISCAT_3D and KAIRA related things. Naturally, the scope was in the software radio defined technologies and on how to use them with phased-array systems. Hence, today we feature two photos of the meeting.

Derek McKay (on the right hand-side) presenting KAIRA
to Markku Lehtinen (on the left hand-side), Leif Johansson
and Matt Ettus.

Markku Lehtinen and Matt Ettus in front of the 32-metre
EISCAT VHF receiver dish in Sodankylä.

Monday, 2 June 2014

SGO history 1944: Lapland War and destroyed Observatory

I was browsing photos of the Finnish Wartime Photograph Archive, a project of the Finnish Defence Forces, and found a set of photos of the Observatory taken by an army photographer 30 October 1944. The photo title given at the sa-kuva.fi site states: “Saksalaiset ovat perääntyessään tuhonneet maailman vanhimman observatorion Sodankylässä täydellisesti.”, i.e “During the withdrawal, the German troops have completely destroyed world’s oldest observatory in Sodankylä”. This was no surprise, as the German troops used the scorched Earth policy during the withdrawal, for example they practically burned all the buildings in Rovaniemi. Hence, Observatory was no exception in this unfortunate war.


It is interesting to read the Observatory annual report of 1944. This document was written by the Observatory Director E. Sucksdorff. According to the report, all the population of Lapland was evacuated during September 1944. The Observatory staff emptied their desks on the 15 September. They took all the recorded data with them, unprinted manuscripts, unfinished studies as well as most important observation and recording devices. The staff and all the material were relocated to Helsinki. However, it was impossible to take everything at short notice and much of the equipment was left behind. Observatory staff wrote notes in Finnish and German, which explained the special purpose of the site and asked that the facility would be left intact. The notes were placed in visible locations, such as on doors etc.


Unfortunately the notes did not help at all and, in practice, the entire Observatory was destroyed. Only an old, and rotten, pilot ball tower (pilotpallotorni in Finnish - for weather balloon experiments, I suppose) and some meteorological observation devices survived. Only ruins were found when Finnish Defence Forces arrived at the Observatory. Among the army personnel, was a photographer, who took some photos of the destruction. Today these photos are publicly available at sa-kuva.fi. This is a pretty unique site to explore the WWII happenings in Finland -- and well worth to visit. Hence, today we feature some photos of the burned Observatory site during the Lapland war year 1944.


The tower and meteorological observation devices were the
only untouched instruments at the site. Source: SA-kuva

Source: SA-kuva

Source: SA-kuva

Source: SA-kuva

Source: SA-kuva

Source: SA-kuva

Source: SA-kuva

Source: SA-kuva

Source: SA-kuva

Sunday, 1 June 2014

Gliders over SGO

Between Tähtelä, where SGO is, and Sodankylä, there is a small aerodrome. Unfortunately, it doesn't run commercial flights (Sodankylä-Oxford would be useful), but it does serve as the base for the Aslak Arctic Rescue Helicopter service and also for small private air operations.

A couple of days ago, we had some such take-off , which flew down along the road not far from the observatory. It was a glider with tow-plane ahead. A bit difficult to see in this photograph, but it was an interesting sight as it flew past the trees.

Glider and tow-plane (Photo: D. McKay-Bukowski)


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