Glossary term: 角分辨率
Description: 分辨率或角分辨率是兩個靠近的點之間可以被視為剛剛分開的最小角度。它也可以被認為是點的擴散（例如恆星），這主要是由於望遠鏡的光學原理。這是望遠鏡一個非常重要的特性，因為具有更高角分辨率的望遠鏡使我們能夠在視覺上分辨彼此非常靠近的恆星，並看到星雲和星系等擴展物體的更精細細節。角距小於分辨率的兩顆恆星將顯示為單個天體。望遠鏡的分辨率可以通過增大光學聚焦鏡或透鏡的尺寸來提高。此外，它還取決於波長，並且隨著波長的增加而變得更差。
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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher The translation of this term and its definition is still awaiting approval
This is an automated transliteration of the simplified Chinese translation of this term
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In Other Languages
- 阿拉伯語: الدفة الزاوية
- 孟加拉語: কৌণিক বিভেদন
- 德語: Auflösungsvermögen
- 英語: Angular Resolution
- 西班牙語: Resolución Angular
- 法語: Résolution angulaire
- 義大利語: Risoluzione angolare
- 日語: 角分解能 (external link)
- 尼泊爾語: कोणीय विभेदन
- 巴西葡萄牙語: Resolução angular
- 簡體中文: 角分辨率
Related Media
A binary brown dwarf system revealed
Caption: This image presents a nearby system of brown dwarfs, objects that fall between planets and stars in mass and do not sustain long-term nuclear fusion in their cores. Located about 6.5 light-years from Earth, this system (known as Luhman 16) is the third closest system to the Solar System after the Alpha Centauri system and Barnard's Star. It was initially observed as what seemed to be a single faint source of infrared light. Brown dwarfs are often difficult to study because of their low brightness, especially in visible light. However they shine brighter in infrared light due to their cooler effective temperatures.
The comparison highlights the importance of observational resolution. The image at the center, taken by NASA’s Wide-field Infrared Survey Explorer (WISE), shows the system as a single blurred object due to its lower resolution (WISE has a resolution of roughly 6 arcseconds). A highlighted zoomed-in view from the Gemini South Observatory in Chile reveals that this “single” source is actually a binary system of two brown dwarfs. The improved angular resolution (roughly 0.6 arcseconds) allows astronomers to separate the two objects clearly, demonstrating how higher-resolution observations uncover hidden structures in the universe. While the Gemini telescope is situated on the Earth and thus is affected by the blurring effects of the Earth's atmosphere, it has a substantially larger mirror than the WISE telescope (8m wide vs. 40cm wide) meaning it can achieve much higher resolutions.
Credit: NASA/JPL/Gemini Observatory/AURA/NSF
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License: PD Public Domain icons
