Ankara University Observatory
| Organization | Astronomy and Space Sciences Department Faculty of Science Ankara University |
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| Location | Ahlatlıbel, Gölbaşı, Ankara, Turkey | ||||||||||||||||||||
| Coordinates | 39°50′37″N 32°46′38″E / 39.84361°N 32.77722°ECoordinates: 39°50′37″N 32°46′38″E / 39.84361°N 32.77722°E | ||||||||||||||||||||
| Altitude | 1,256 m (4,121 ft) | ||||||||||||||||||||
| Established | August 26, 1963 | ||||||||||||||||||||
| Website | rasathane |
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| T40 Kreiken | 406mm Reflecting telescope |
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| T35 | 356mm Reflecting telescope |
| T30 Maksutov | Cassegrain |
| T15 | Coudé |
| T20 | 203mm Reflecting telescope |
| ETX-125 | 127mm Reflecting telescope |
| Mars Explorer | 70mm Refracting telescope |
| TAD-2 | 60mm Refracting telescope |
| TAD-1 | 60mm Refracting telescope |
| Radio telescope | Regional radio (defunct) |
The Ankara University Observatory (AUG) (Turkish: Ankara Üniversitesi Gözlemevi), is a ground-based astronomical observatory operated by the Astronomy and Space Sciences Department at Ankara University's Faculty of Science. Established in 1959 by Dutch astronomer Egbert Adriaan Kreiken in Ahlatlıbel, Ankara. Currently, it consists of nine optical telescopes and a radio telescope, which is currently taken out of service. Old instruments are displayed in a museum at the observatory.
Ankara University's Faculty of Science decided in 1954 to establish an observatory to begin with astronomical studies. Ahlatlıbel in Gölbaşı, Ankara was chosen as the ideal site, a location with dark skies far from the city's downtown to avoid the effects of light pollution, having an average 300 clear nights per year and also offering easy transportation from the campus. It is situated 8 km (5.0 mi) south of Ankara at an altitude of 1,256 m (4,121 ft).
Groundbreaking of the main building and the three domes took place in 1959. The observatory was officially inaugurated on August 26, 1963 accompanied by an international astronomy conference. The scientific studies were carried out in the beginning with a radio telescope produced by the Dutch PTT, a 5 cm astrograph, a 15 cm Coudé telescope of Zeiss from Germany for solar observations, a Hilger and Watts microphotometer and a Cuffey Iris photometer.
Named after Egbert Adriaan Kreiken, the founder of the observatory, it is used in general for photoelectric photometry observations on eclipsing binary stars and variable stars.
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