博碩士論文 87226014 詳細資訊




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姓名 蔡德昭( De-Zhou Cai)  查詢紙本館藏   畢業系所 光電科學與工程學系
論文名稱 天文望遠鏡影像增強之探討
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摘要(中) 題的方法有三:(1)利用人工光源增加物體的亮度;(2)收集
更多的光線進入眼睛;(3)利用儀器增加光電轉換的量子效
率,以及增加電光轉換過程中光線的衰減時間。在某些情
況下,待測物體的亮度是固定不變的,因此我們只能運用
儀器來進行觀測工作。
影像增強管是本系統的重點,它是使用感光元件,(1)
藉著其寬頻效應,來收集更多的光線;(2)利用光電效應,
將光轉換成電子,然後倍增電子數,同時提高電子的動能,
來達成影像的增強。本文乃是結合天文望遠鏡與第二代影
像增強管,使目標景物之輸出影像的強度增加,再利用CCD
攝影機將此增強影像傳送到監視器,或者是進行後續的影
像處理。
摘要(英) solve the problem, there are three methods to be studied: (1)
Increase subject’s brightness with artificial light source. (2)
Collect more light into our eyes. (3)Use instrument to increase
the quantum efficiency of opto-electronic transformation and the
attenuation time of light of electro-optical transformation. In
some situations, we can not enlarge subject’s brightness, so we
can only use instrument to proceed our observation.
Image intensifier tube is the key part. It uses light-sensitivity
element and (1) collects more light by its broad frequency effect.
(2) utilizes photoelectric effect to transform light into electrons,
then increases the numbers and the kinetic energy of the electron
to reach the enhancement of the image. In this thesis, we combine
telescope and image intensifier tube of generationⅡto increase
the brightness of the image of the subject, and then use CCD
camera to transport this image to monitor.
論文目次 中文摘要.................................................................................................vi
英文摘要............................................................................................... vii
誌謝...................................................................................................... viii
目錄.........................................................................................................ix
圖目錄.....................................................................................................xi
第一章 引言...........................................................................................1
第二章 原理...........................................................................................7
2-1 系統方塊圖..................................................................................7
2-2 CCD 攝影機的鏡頭....................................................................8
(1) 鏡頭的焦距f...........................................................................8
(2) 透鏡組的設計...................................................................... 10
2-3 影像增強管............................................................................... 12
2-4 天文望遠鏡............................................................................... 15
(1) 拋物面之反射鏡面........................................................ 16
(2) 拋物面鏡的焦距............................................................. 17
(3) 拋物面鏡的MTF (Modulation Transfer Function) .... 18
(4) 拋物面鏡的f-number ( /# f )......................................... 21
x
第三章 實驗架構與結果................................................................... 23
3-1 元件的選用及其一般特性..................................................... 23
3-2 實驗結果................................................................................... 28
第四章 結論........................................................................................ 31
參考文獻............................................................................................... 32
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33
Intensification : The Generation 3 Wafer Tube”, Applied
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34
17. G. W. Goetze and A. H. Boerio, “Secondary Electron
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Camera Tubes”, Proc. IEEE, p.1007, 1964.
18. Soule, Electro-Optical Photography at Low Illumination
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19. J. Texereau, How to Make A Telescope, Willmann-Bell,
Richmond, Va, 1984.
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指導教授 王迺愨(Na-Ture Wang) 審核日期 2001-7-3
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