Imaging of binary stars in the presence of defocusing
Other Title(s)
تصوير النجوم الثنائية بوجود دالة التبأير
Author
Source
Issue
Vol. 52, Issue 4 (31 Dec. 2011)6 p.
Publisher
University of Baghdad College of Science
Publication Date
2011-12-31
Country of Publication
Iraq
No. of Pages
6
Main Subjects
Abstract AR
في هذه الدراسة، جرت عملية محاكاة لنموذج رياضي ثنائي الأبعاد لتخمين وجود تأثير دالة التبأير بسبب جودة فتحة التلسكوب.
تم دراسة دالة الانتشار النقطية و دالة التضمين لمصدر نقطي و كذلك المركبات الترددية في أطياف النجوم الثنائية بوجود و عدم وجود دالة التبأير. دلت الدراسة على أن مجموع مركبات الترددات في دالة التضمين تتناقص بصورة آسية عندما يكون معاملة دالة التبأير تقترب من 6 و هذا السلوك يصبح ناعما بعد هذه القيمة.
Abstract EN
In this paper a simulation for a mathematical two dimensional model was conducted to assess the presence of defocusing due to telescope aperture quality.
The point spread function (psf.), Modulation transfer function (MTF), and Fourier frequencies of binary star are computed in the absence and presence of defocusing.
The results show that the total frequency components of MTF decreases very sharply as defocusing values goes to 6 and after this value the total frequency changes very slightly afterward.
The relative heights of the second to third peaks decrease rapidly as defocusing values goes to 3 and slightly changes after that.
American Psychological Association (APA)
Hasan, Fuad Nadim. 2011. Imaging of binary stars in the presence of defocusing. Iraqi Journal of Science،Vol. 52, no. 4.
https://search.emarefa.net/detail/BIM-308328
Modern Language Association (MLA)
Hasan, Fuad Nadim. Imaging of binary stars in the presence of defocusing. Iraqi Journal of Science Vol. 52, no. 4 (2011).
https://search.emarefa.net/detail/BIM-308328
American Medical Association (AMA)
Hasan, Fuad Nadim. Imaging of binary stars in the presence of defocusing. Iraqi Journal of Science. 2011. Vol. 52, no. 4.
https://search.emarefa.net/detail/BIM-308328
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references.
Record ID
BIM-308328