• Title/Summary/Keyword: Uigijipseol

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ON THE ARMILLARY SPHERE OF NAM BYEONG-CHEOL-II: Translation of a chapter on how to use an armillary sphere in Uigijipseol (남병철의 혼천의 연구 II 『의기집설』에 나오는 <혼천의용법>의 역해설)

  • Kim Sang-Hyuk;Lee Yong-Sam;Nam Moon-Hyon
    • Journal of Astronomy and Space Sciences
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    • v.23 no.1
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    • pp.71-90
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    • 2006
  • This study is about , which constitutes Honcheonui(an armillary sphere) put of $\ulcorner$Uigijipseol$\lrcorner$ (Volume I) together with and -dealt with earlier than this subject. The study's construction on the text of is organized into 15 categories, including installation, observations, instructions for use, astronomical theories and formulas, etc. This study provides easy-to-understand illustrations of the figures shown in the original and contains detailed descriptions of the related calculation procedures. In the 'Instructions for Use of Honcheonui' discussed here, the readers are introduced to astronomical computation systems, mainly based on spherical trigonometry and proportional methods. The section also provides systematic and detailed reviews of astronomical theories and calculation procedures, allowing you to assess the level of astronomy knowledge at that time.

ANALYSIS OF THE USAGE OF NAM BYEONG-CHEOL'S ARMILLARY SPHERE IN UIGIJIPSEOL IN THE 19TH CENTURY (19세기 남병철 『의기집설(儀器輯說)』 혼천의 용법 분석)

  • HONG SOON CHOI;SANG HYUK KIM;BYEONG-HEE MIHN;KYOUNG-UK NAM;GEOYOUNG-HAN YOO;YONGGI KIM
    • Publications of The Korean Astronomical Society
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    • v.39 no.1
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    • pp.13-26
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    • 2024
  • The armillary sphere, an astronomical observation device embodying the Orbital Heaven Theory of the Later Han Dynasty in China, holds both historical and scientific significance. It has been produced in various forms by many individuals since its inception in the era of King Sejong in the Joseon Dynasty. A prominent figure in this field was Nam Byeong-cheol (南秉哲, 1817-1863), known for his work 'Uigijipseol' (儀器輯說), published in 1859, which detailed the history, production methods, and usage of the armillary sphere. This text particularly highlights 21 applications of the armillary sphere, divided into 33 measurements, covering aspects like installation, time, and positional measurements, supplemented with explanations of spherical trigonometry. Despite numerous records of the armillary sphere's design during the Joseon Dynasty, detailed usage information remains scarce. In this study, the 33 measurements described in 'Uigijipseol' (儀器輯說) were systematically classified into six for installation, nineteen for position measurement, seven for time measurement, and one for other purposes. Additionally, the measurement methods were analyzed and organized by dividing them into the ecliptic ring, moving equatorial ring, and fixed equatorial ring of the armillary sphere. In other words, from a modern astronomical perspective, the results of schematization for each step were presented by analyzing it from the viewpoint of longitude, right ascension, and solar time. Through the analysis of Nam's armillary sphere, this study not only aims to validate the restoration model of the armillary sphere but also suggests the potential for its use in basic astronomical education based on the understanding of the 19th-century Joseon armillary sphere.