Downstream companies - EAS

4
1810
Tartu Observatory is opened and the long tradition
of professional astronomy is founded in Estonia
1824
Mounting of the Big Fraunhofer Refractor, the largest and the
most modern lens telescope in the world, in Tartu Observatory
1813-1839
World-famous astronomer Friedrich Georg
Wilhelm Struve, who worked in Tartu (Dorpat),
measures the parallax of Vega
1885
Ernst Hartwig discovers a supernova in the Andromeda nebula.
1922
Ernst Öpik determines the distance to the Andromeda galaxy for the first time.
1967-1972
Space food chefs of Poltsamaa Agricultural Factory lay
the table for Soviet cosmonauts.
1930
Estonian optician and astronomer Bernhard Schmidt presents
his aberration-free wide angle mirror telescope, the Schmidt
camera (in Bergedorf Observatory, Hamburg). The Schmidt
camera’s high quality comes from its spherical mirror and a
correction plate.
1970
Tartu Observatory starts developing, testing and implementing methods for calibration
of optical sensors.
1974
Jaan Einasto, Ants Kaasik and Enn Saar study movements of satellite
galaxies and demonstrate that besides baryonic matter (stars, gas,
dust) galaxies also contain extended haloes of dark matter.
1970-1980
The first Soviet Salyut type space station is equipped with the Estonian built Mikron,
a noctilucent cloud observation device.
1980-1990
In mid 1980s a FAZA telespectrometer (also known as
Phasa) is constructed in Estonia for the Soviet orbital
space station Mir.