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Iso-Heikkilä Observatory (Finnish: Iso-Heikkilän tähtitorni, Swedish: Storheikkilä observatorium) is an amateur astronomical observatory used by a local amateur astronomical association, Turun Ursa ry in the Iso-Heikkilä district of Turku, Finland.
- 1937
- 062
- Turun Ursa ry
Iso-Heikkilä Observatory. An observatory desinged and built by professor Väisälä was finished in Iso-Heikkilä, Turku, in autumn 1937. Before, astronomical observations had been made at an observatory of Ursa of Turku, a local association of amateur astronomers.
1947 Iso-Heikkilä, provisional designation 1935 EA, is a carbonaceous Eos asteroid from the outer region of the asteroid belt, approximately 30 kilometers in diameter. It was discovered on 4 March 1935, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland.
- 4 March 1935
- Y. Väisälä
- (1947) Iso-Heikkilä
- Turku Obs.
1947 Iso-Heikkilä, provisional designation 1935 EA, is a carbonaceous Eos asteroid from the outer region of the asteroid belt, approximately 30 kilometers in diameter. It was discovered on 4 March 1935, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland.
As the city expanded and a steel factory was built under a kilometer away from the observatory, the astronomy department of the university moved to Tuorla Observatory in the 1950s. Iso-Heikkilä remained in the use of students for some time, until the university gave up its ownership completely in 1972.
The district's linguistic makeup is 94.86% Finnish, 3.94% Swedish, and 1.21% other languages. Most of Iso-Heikkilä is industrial area and offices, but there is also a residential area with a children's daycare centre and a home for the elderly. The Iso-Heikkilä Observatory is located in the Iso-Heikkilä district.
The current Iso-Heikkilä Observatory was built in 1937 for the Turku University. When the light pollution so near the city grew, the University erected a new observatory in Tuorla in 1950s. Iso-Heikkilä was left to amateur astronomers and is still used in this fashion.
