| TÜBİTAK National Observatory | |
| Organization: | Scientific and Technological Research Council of Turkey |
| Location: | Bakırtepe, Antalya, Turkey |
| Altitude: | 2450m (8,040feet) |
| Telescope1 Name: | RTT150 |
| Telescope1 Type: | Cassegrain |
| Telescope2 Name: | T100 (ACE RC1.0) |
| Telescope2 Type: | Ritchey–Chrétien |
| Telescope3 Name: | T60 (OMI RC06) |
| Telescope3 Type: | Ritchey–Chrétien |
| Telescope4 Name: | YT40 (Meade LX200GPS) |
| Telescope4 Type: | Schmidt–Cassegrain |
| Telescope5 Name: | ROTSEIIID |
| Telescope5 Type: | Robotic Optical Transient Search Experiment |
TÜBİTAK National Observatory (Turkish: TÜBİTAK Ulusal Gozlemevi, TUG) is a ground-based astronomical observatory operated by the TUG Institute of the Scientific and Technological Research Council of Turkey (TUBITAK). Established in 1991, it is located at an altitude of 2450m (8,040feet) in Bakırtepe, around 50km (30miles) west-southwest of Antalya in southern Turkey.
There are five telescopes installed in Bakırtepe:
Scientists led by a Turkish astronomer from Ankara University discovered an exoplanet orbiting the giant star HD 208897, which is located at a distance of some 210 light years from the Earth. The exoplanet has a minimum mass of 1.4 Jupiter masses, and rotates its parent star from about 1.05 AU away in every 353 days on a nearly circular orbit. The discovery is the result of a ten-year-long research work of precise radial-velocity method carried out by using the Coude Echelle Spectrograph (CES) installed on the 1.5-meter Russian-Turkish Telescope (RTT150). Follow-up observations at the Okayama Astrophysical Observatory (OAO) in Japan and the Ankara University Kreiken Observatory (AUKR) confirmed the discovery, which was made public on August 6, 2017.