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Featured researches published by A. Okten.


Solar Physics | 1990

High latitude helical surge of May 22, 1989

A. Okten; Hikmet Çakmak

A helical surge (S 72, W 90) was recorded by a monochromatic filter at the University Observatory of Istanbul. It is a significient one at a very high latitude and without any center of activity. A sequence of the filtergrams showed some condensed points from which the motions of the plasma are traced. Different velocities were determined on each of the branches of the helical surge during its evolution. The surge reached its maximum height of 298 000 km and the maximum velocity of this upper region was 250 km s−1.


Archive | 2007

Structure and flattening of the solar corona

M. Turker Ozkan; A. Okten; Nilda Oklay; A. Gultekin; M. Kara; Z. Funda Bostanci; M. Basal; Nurol Al Erdogan


Astronomische Nachrichten | 2003

A solar differential image motion monitor (T-SDIMM) for TUBITAK National Observatory of Turkey

A. Okten; Tuncay Ozisik; T. Ak


Archive | 2002

Eclipse Observations of Istanbul University and Abastumani Astrophysical Observatory

A. Okten; M. T. Ozkan; T. Ozypyk; T. Ak; H. Gulsecen; N. Al; A. Talat Saygac; Sevinç Gülseçen; Hasan H. Esenoglu; A. Kylcyk; M. Kara; V. I. Kulijanisvili; M. Sh. Gigolashvili; A. An. Ambartsumian; Ts. T. Khetsuriani; Tengiz M. Borchkhadze; E. V. Khutsisvili; E. K. Goderidze; R. I. Kiladze; V. P. Japiashvili; G. N. Salukvadze; L. A. Gheonjan; G. O. Javkhisvili; A. K. Mayer; D. R. Japaridze; Zhana Kapanadze; V. N. Dernedjiev


Archive | 2002

Does the sun affect the earth's climate?

Ali Kilcik; A. Okten; N. Al


Archive | 2002

1999 Eclipse observations of Istanbul University observatory and Abastumani astrophysical observatory

A. Okten; M. T. Ozkan; Tak Ozypyk T; H. Gulsecen; N. Al; A. Talat Saygac; Sevinç Gülseçen; Hasan H. Esenoglu; A. Kylcyk; M. Kara; V. I. Kulijanisvili; M. Sh. Gigolashvili; A. An. Ambartsumian; Ts. T. Khetsuriani; Tengiz M. Borchkhadze; Eh. V. Khutsishvili; E. K. Goderidze; R. I. Kiladze; V. P. Japiashvili; G. N. Salukvadze; L. A. Gheonjan; G. O. Javkhisvili; A. K. Mayer; D. R. Japaridze; Zhana Kapanadze


Archive | 2000

Morphology and dynamics of an eruptive prominence

A. Okten; V. N. Dermendjiev; Nikolai I. Petrov; Tuncay Ozisik


Archive | 2000

Electropolarimetry of the Solar Corona

V. I. Kulijanishvili; J. G. Lominadze; M. T. Ozkan; A. Okten


Archive | 2000

Morphology and evolution of a h-alpha eruptive prominence

A. Okten; V. N. Dermendjiev; Nikolai I. Petrov; Tuncay Ozisik; Hasan H. Esenoglu


Archive | 2000

Objectives of the Georgian-Turkish Joint Group at Solar Eclipse in Elazig

M. Sh. Gigolashvili; Ts. S. Khetsuriani; Eh. V. Khutsishvili; R. I. Kiladze; G. N. Salukvadze; L. A. Gheonjan; A. K. Mayer; D. R. Japaridze; Zhana Kapanadze; A. Okten; T. Ozkan; Tuncay Ozisik; H. Gulsecen; N. Al; Sevinç Gülseçen; Ali Kilcik; Bulent Ozgur; F. Bostanci

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Tuncay Ozisik

Scientific and Technological Research Council of Turkey

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D. R. Japaridze

Abastumani Astrophysical Observatory

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M. Sh. Gigolashvili

Abastumani Astrophysical Observatory

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R. I. Kiladze

Abastumani Astrophysical Observatory

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T. Ak

Istanbul University

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