The DAG Project, a 4m class telescope: the telescope main structure performance

Marchiori, G.
Busatta, A.
Ghedin, L.
Marcuzzi, E.
Manfrin, C.
Battistel, C.
Pirnay, O.
Flebus, Carlo
Yesiliaprak, C.
Yerli, Sinan Kaan
Dogu Anatolu Gozlemevi (DAG-Eastern Anatolia Observatory) Project is a 4m class optical, near-infrared Telescope and suitable enclosure which will be located at an altitude of similar to 3.170m in Erzurum, Turkey. The DAG telescope is a project fully funded by Turkish Ministry of Development and the Ataturk University of Astrophysics Research Telescope - ATASAM. The Project is being developed by the Belgian company AMOS (project leader), which is also the optics supplier and EIE GROUP, the Telescope Main Structure supplier and responsible for the final site integration. The design of the Telescope Main Structure fits in the EIE TBO Program which aims at developing a Dome/Telescope systemic optimization process for both performances and competitive costs based on previous project commitments like NTT, VLT, VST and ASTRI. The optical Configuration of the DAG Telescope is a Ritchey-Chretien with two Nasmyth foci and a 4m primary thin mirror controlled in shape and position by an Active Optic System. The main characteristics of the Telescope Main Structure are an Altitude-Azimuth light and rigid structure system with Direct Drive Systems for both axis, AZ Hydrostatic Bearing System and Altitude standard bearing system; both axes are equipped with Tape Encoder System. An innovative Control System characterizes the telescope performance.


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YEŞİLYAPRAK, Cahit; Yerli, Sinan Kaan; KESKİN, ONUR (2015-10-02)
This document (Eastern Anatolia Observatory (DAG) is the new observatory of Turkey with the optical and near-infrared largest telescope (4 m class) and its robust observing site infrastructure. This national project consists of three phases with DAG (Telescope, Enclosure, Buildings and Infrastructures), FPI (Focal Plane Instruments and Adaptive Optics) and MCP (Mirror Coating Plant) and is supported by the Ministry of Development of Turkey. The tenders of telescope and enclosure have been made and almost al...
Citation Formats
G. Marchiori et al., “The DAG Project, a 4m class telescope: the telescope main structure performance,” 2016, vol. 9906, Accessed: 00, 2020. [Online]. Available: