Yazar "Keskin, Onur" için MF - Bildiri Koleksiyonu | Makine Mühendisliği Bölümü / Department of Mechanical Engineering listeleme
-
Adaptive backstepping approach for 2-DOF telescopes despite unknown wind disturbance
Ünal, Ali Cem; Yılmaz, Cemal Tuğrul; Kararsız, Gökhan; Yeşilyaprak, Cahit; Keskin, Onur (Institute of Electrical and Electronics Engineers Inc., 2019-07)Small ground telescopes on the marked are widely used in many space observatories and scientific researches. There are three main problems in such telescopes; positioning of the focal point and the need of tuning for both ... -
Adaptive optics for DAG telescope
Keskin, Onur; Jolissaint, Laurent (Türk Astronomi Derneği, 2020-12-11)What we propose for DAG is therefore a natural guide star GLAO system, that can be turned into a highly efficient AO system. Thus the working principle and expected performance analysis will be shown. In this manner most ... -
Advances for the 4m DAG Telescope in Flange derotator
Keskin, Onur; Ünal, Ali Cem; Koç, İlker Murat; Jolissaint, Laurent; Yeşilyaprak, Cahit (SPIE, 2020-12-13)The purpose of this study is expressing advances in design stages for in flange optical field derotator system for 4 meters DAG Telescope. In-Flange Derotator KORAY (K-mirror OpticalRelAY) is designed, analysed and ... -
Agile development approach for the observatory control software of the DAG 4m telescope
Keskin, Onur; Güçsav, Bülent Burak; Çoker, Deniz; Yeşilyaprak, Cahit; Zago, Lorenzo; Yerli, Sinan Kaan (SPIE, 2016)Observatory Control Software for the upcoming 4m infrared telescope of DAG (Eastern Anatolian Observatory in Turkish) is in the beginning of its lifecycle. After the process of elicitation-validation of the initial ... -
Auxiliary free space optical communication project to ensure continuous transfer of data for DAG the 4m telescope
Keskin, Onur; Yeşilyaprak, Cahit; Yerli, Sinan Kaan (SPIE, 2016)The continuity of the amount of data that the 4m DAG (Eastern Anatolia Observatory in Turkish) telescope will produce and transfer to Ataturk University is critical not to jeopardize the science programs. Though the fiber ... -
Coordination in building an observatory: A case study of Eastern Anatolian Observatory (DAG)
Şahmalı, Ali Erkan; Yeşilyaprak, Cahit; Keskin, Onur (SPIE-Int Soc Optical Engineering, 2018)Eastern Anatolian Observatory (DAG) is designed to build on one of the summits of Palandoken Mountains in Erzurum, Turkey, at an altitude of 3,151 meters. The building is under construction since 2015 and expected to be ... -
DAG 4m telescope: assembly, integration and testing
Pirnay, Olivier; Lousberg, Grégory P.; Gabriel, Eric; Marchiori, Gianpietro; Busatta, Andrea; Yeşilyaprak, Cahit; Keskin, Onur (SPIE-Int Soc Optical Engineering, 2018-07-06)AMOS with EIE as a main subcontractor, was awarded a contract in November 2014 for the design, manufacturing and installation of a 4m-class telescope for the Turkish Eastern Anatolia Observatory (DAG) situated at 3170 m ... -
DAG odak düzlemi araçları - hedefler ve seçenekler
Yerli, Sinan Kaan; Yeşilyaprak, Cahit; Keskin, Onur; Güver, Tolga (Türk Astronomi Derneği, 2020-12-11)DAG projesi çerçevesinde, teleskobun da tanımlanması ve optiğinin belirlenmesinden sonra Türk Astronomisinin gereksinim ve gelecek hedefleri de gözetilerek proje ekibi DAG teleskobunun iki Nasmyth odağına yerleştirilecek ... -
The DAG project and its management
Zago, Lorenzo; Keskin, Onur (Türk Astronomi Derneği, 2020-12-11)The DAG Project and managerial issues related to call for tenders, determination of technical specifications both for the telescope, the dome and the observatory building will be presented. -
The DAG Project, a 4m class telescope: The telescope main structure performance
Keskin, Onur; Marchiori, Gianpietro; Busatta, Andrea; Ghedin, L.; Marcuzzi, Enrico; Manfrin, Cristiana; Battistel, C.; Pirnay, Olivier; Flebus, Carlo; Yeşilyaprak, Cahit; Yerli, Sinan Kaan (SPIE, 2016)Dogu Anatolu Gözlemevi (DAG-Eastern Anatolia Observatory) Project is a 4m class optical, near-infrared Telescope and suitable enclosure which will be located at an altitude of 3.170m in Erzurum, Turkey. The DAG telescope ... -
DAG telescope site studies and infrastructure for possible international co-operations
Keskin, Onur; Yeşilyaprak, Cahit; Yerli, Sinan Kaan; Aliş, Sinan (SPİE-INT Soc Optical Engineering, 2016)The selected site for the 4 m DAG (Eastern Anatolian Observatory in Turkish) telescope is at "Karakaya Ridge", at 3170 m altitude (3150 m after summit management). The telescope's optical design is performed by the DAG ... -
DAG türbülans jeneratörü
Özbaldan, Emrah Emin; Kılıçerkan Başlar, Gamze; Başlar, İsmail; Keskin, Onur; Yeşilyaprak, Cahit (Türk Astronomi Derneği, 2020-12-11)Doğu Anadolu Gözlemevi (DAG) projesi kapsamında; teleskop için gereken ve zorunlu olan Adaptif Optik (AO) sisteminin kontrol sistemlerinin geliştirilmesi, performansı ve ön testlerinin gerçekleştirileceği, atmosferik olarak ... -
DAG-SLODAR (SLOpe Detection And Ranging) Teleskobu
Şatır, Onur; Yeşilyaprak, Cahit; Keskin, Onur (Türk Astronomi Derneği, 2020-12-11)Atmosferin astronomik gözlemlere olan olumsuz etkilerini alt etmek üzere geliştirilmiş ve DAG teleskobunda da kullanılacak olan Adaptif Optik (AO) sistemleri, türbülansın ayrıntılı bir şekilde karakterize edilmesine ihtiyaç ... -
DAG-TGI: Turbulence generator instrument for DAG (Eastern Anatolia Observatory)
Yeşilyaprak, Cahit; Keskin, Onur; Akbulak, Ümit Bora; Tezcan, Cihan Tuğrul; Güvenir, Furkan; Aydemir, Ömer Faruk (SPIE-Int Soc Optical Engineering, 2018-07-18)DAG (East Anatolia Observatory) Telescope has 4 m mirror with active optics (a0) and adaptive optics (AO) systems. In order to evaluate DAG's focal plane instruments and their installation, calibration and laboratory ... -
DAG-TGI: türbülans jeneratörü kalibrasyonu
Tezcan, Cihan Tuğrul; Akbulak, Ümit Bora; Güvenir, Furkan; Aydemir, Ömer Faruk; Keskin, Onur; Yeşilyaprak, Cahit (Türk Astronomi Derneği, 2020-12-11)DAG (Doğu Anadolu Gözlemevi) 4-metre birincil ayna ile aktif (aO) ve adaptif (AO) optik sistemlerine sahiptir. DAG’ın odak düzlemi aletlerinin geliştirilmesi ve kurulması için, türbülans şartlarını canlandırabilen bir ... -
DAG: A new observatory and a prospective observing site for other potential telescopes
Keskin, Onur; Yeşilyaprak, Cahit; Yerli, Sinan Kaan; Güçsav, Bülent Burak (SPIE, 2016)DAG (Eastern Anatolia Observatory is read as "Dogu Anadolu Gözlemevi" in Turkish) is the newest and largest observatory of Turkey, constructed at an altitude of 3150 m in Konakll/Erzurum provenience, with an optical and ... -
Design of a derotator for the 4 m DAG telescope
Baudet, Jeremie; Jolissaint, Laurent; Keskin, Onur; Yeşilyaprak, Cahit; Yerli, Sinan Kaan (SPIE-Int Soc Optical Engineering, 2016-08-09)This paper Silt our work on the design of a field derotator for the adaptive optics instruments platform of DAG (Dogu Anadolu Cozier vi), a new 4 in telescope for astronomical observations near the city of krzurum, l'urkey. ... -
The design of an adaptive optics telescope: the case of DAG
Keskin, Onur; Jolissaint, Laurent; Zago, Lorenzo; Yerli, Sinan Kaan; Yeşilyaprak, Cahit; Mudry, Emeric; Lousberg, Grégory P. (SPIE, 2016-07-27)In this paper, we describe in detail the optical design of DAG, a new 4 m telescope for Turkey. DAG is an "adaptive optics friendly" telescope, in a sense that each design decision is taken considering the potential impact ... -
Eastern Anatolia Observatory (DAG): recent development in 2019
Yeşilyaprak, Cahit; Keskin, Onur (Universidad Nacional Autonoma de Mexico, 2019-10-04)Eastern Anatolia Observatory (DAG) will be the Turkey’s largest (4m) and first infrared observatory is located in Erzurum city at the East part of Turkey with an altitude of 3170 m. We present the recent development of DAG ... -
Eastern Anatolia Observatory (DAG): Recent developments 2017
Yeşilyaprak, Cahit; Keskin, Onur (SPIE-INT Soc Optical Engineering, 2018-07-06)East Anatolia Observatory (DAG) is the new observatory of Turkey with the optical (VIS) and near-infrared (NIR) largest telescope (4 m mirror) and its robust observing site infrastructure. This national project consists ...