本研究的主要目的在於設計一組可搭載於立方衛星或在一般衛星上作為科學酬載之用的極光觀測影像儀，我們將它命名為極光精細結構影像儀(Imager for Fine Structure of Aurora, IFSA)，顧名思義，此影像儀主要用於觀測地球高層大氣的極光現象，並能進行精細結構的解析。在整體效能上我們所比對的對象為福衛二號之科學酬載(Imager of Sprites and Upper Atmospheric Lightning) , ISUAL CCD影像儀)，希望藉由開發此微型化鏡頭模組，能成功取代ISUAL較耗資源(空間、重量與電力)的設計，但同時還能維持原先的觀測視野(Field of View, FOV)與解析度品質。在研究過程中，我們採用OpticStudio ® Zemax軟體進行影像儀物鏡組之光學設計，並將對鏡組設計後的成像斑點、能量累積以及調制轉換函數(Modulation Transfer Function, MTF)等的光學品質加以討論，藉此確認此影像儀的光學系統與後端的影像處理系統間的匹配程度。

The primary objective of this study is to design an aurora observation imager, named Imager for Fine Structure of Aurora (IFSA), that can be installed on CubeSats or small satellites. As the name implies, this instrument is primarily intended for observing the auroral phenomenon in the upper atmosphere of the Earth and possesses sufficient resolution to analyze the fine structure of the aurora. The reference model of the design of this optical instrument is based on the scientific payload of FORMOSAT-2 (ISUAL CCD imager). Our aim is to replace the relatively resource-intensive design in ISUAL with the development of this miniaturized lens module. The new design is expected to enhance space efficiency, reduce weight, and minimize power consumption while retaining the original Field of View (FOV) and pixel resolution.
The optical path of the combined lens is being designed using Zemax software. The study will discuss about the optical output quality of imaging spots, energy accumulation, and Modulation Transfer Function (MTF). Moreover, the integration between the optical system and the image receiving system will also be addressed in this research.

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