• Journal of Astronomy and Space Sciences
• /
• 제23권1호
• /
• pp.71-90
• /
• 2006

$\ulcorner$의기집설$\lrcorner$의 <혼천의설(渾天儀說)>, <혼천의제법(渾天儀製法)>에 이어서 이 논문에서는 <혼천의용법(渾天儀用法)>을 연구하였다. <혼천의용법(渾天儀用法)>의 원문을 해석하여 혼천의 의 설치, 관측 및 사용법, 천문이론과 계산방법 등을 15개 항목으로 정리하였다. 그리고 원문에서 제시하고 있는 그림을 이해하기 쉽도록 표현하였고 풀이과정을 상세히 기술하였다. 혼천의 사용법에서 소개하고 있는 천문학적 계산방법은 주로 구면 삼각법과 비례법을 이용하고 있으며, 천문학적 이론이나 계산과정을 체계적으로 자세히 다루고 있어 당시의 천문과학 수준을 알아 볼 수 있었다.

• 천문학논총
• /
• 제39권1호
• /
• pp.13-26
• /
• 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.