1. sci-universe:

    The line above is the spectrum of a star Beta Ursae Minoris “recorded” in 1976. As I mentioned in a recent post, I was working on astronomical photographic plates. There are about 2000 of such plates in the archives of Tartu Observatory’s astrophysics department and they all hold important and unique observing data of various stars. I digitalized a part of the collection and data which also had to be adjusted and organized.

    The spectrums recorded from the stars’ light show the chemical composition of them. It was discovered in 19th century and it lead to the birth of astrophysics. (You can read all about its history here.) The technique involved a telescope which collected the light from the object of interest (it didn’t have to be a star), spectrograph which broke the light into a spectrum, and a glass plate with specific emulsion.
    Observatories around the world have similar archives as the spectroscopy  with astronomical photoplates was the best way to research stars at that time. Now most of them are being digitalized to make an available database which could be very useful for historical research.

    This is what the spectrum plates of our observatory look like:

     

  2. canoneero:

    Autumn’s last breaths…

     

  3. (Source: russianstencil)

     

  4. sometimesmesometimesyou:

    Something I saw in Tartu

     

  5. dasmystic:

    This time one is no longer lingering in strange new lands but has instead returned back to the roots and is exploring the rich and highly promising alternative culture of Tartu, a South-Estonian town known since the 17th century as the academics gathering point but today standing out more and more for it’s flourishing street art scene. Hiding a (possible) surprise behind each corner, Tartu offers a lot more during an evening stroll than the average urban landscape would.

    Wandering through one of the multiple cozy-looking wood-loving neighbourhoods Karlova, amongst which streets blessed with names from the country’s national epic “Kalevipoeg” can be found, the wonderer encounters a lot more than the classical urban art usually offers. A remarkable environment is created by the mixture of graffiti, narrative stencil art and decorations fabricated by the locals. Considering other phenomena that occur within the normal everyday life, like for example children running around with toy machine guns bigger then themselves or street indications pointing towards the sky, the particularity of this unique place can only seem natural.

     

  6. otutotu:

    Rapping is so last century! Streetopera is new cool thing! P.s. volumes up, you are not regret! (at Tartu, Estonia)

     

  7. utstudentblog:

    Finally playing tourist-tourist in Tartu a bit. Good times at the University Museum and going up the tower. And just got back from a pleasant Emajõgi boat ride with Seto Line’s cruise.

     

  8. estlandia:

    Tartu Raekoja Plats või Raatuse Plats nagu seda tol ajal kutsuti (Eestikeelne sõna “Raatus” tuleneb saksakeelsest sõnast “Rathaus”, mis tähendab raekoda). Foto autor on Johannes Pääsuke.

    Tartu Town Hall Square or Raatuse Square as it was called back then (Estonian word “Raatus” comes from German word “Rathaus”, which means town hall). Photo taken by Johannes Pääsuke.

     

  9. (Source: kaisamadli, via kaisamadli)

     

  10. paulkostabi:

    #tartu #estonia

     

  11. 2,000 posts!

    Jay? :D

     

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  13. paulkostabi:

    #tartu pipe organ

     

  14. paulkostabi:

    Beautiful concert in #tartu full house sold out #phish #jamout #diddys #jams #solos #edm #tartu #estonia #kostabeat

     

  15. (Source: kaisamadli, via kaisamadli)