[논문]조선 후기 석제 앙부일구 분석

김상혁; 민병희; 김재영

doi:10.5303/pkas.2022.37.3.035

조선 후기 석제 앙부일구 분석
ANALYSIS OF ANGBU-ILGU, A STONE MATERIAL IN THE LATE JOSEON DYNASTY 원문보기

천문학논총 = Publications of the Korean Astronomical Society, v.37 no.3, 2022년, pp.35 - 47

김상혁 (한국천문연구원) , 민병희 (한국천문연구원) , 김재영 (국립기상박물관)

Abstract ▼ AI-Helper

This study investigated the stone Angbu-ilgu (scaphe sundial) of the Korea Meteorological Administration (KMA) and the Seoul Museum of History (SMH). Since the first Angbu-ilgu was produced in Korea in 1434 (the year of the reign of King Sejong), Angbu-ilgu has been reproduced with various materials. The upper surface of these two stone Angbu-ilgus symbolizes the horizon. On the hemisphere concave at the center of the horizon, the South Pole, the time line, and the season line are engraved. On the horizon of both the KMA and SMH Angbu-ilgus, the schematic, typeface, and composition of the inscription completely coincide with each other. In this study, it was estimated that the appearance of the KMA Angbu-ilgu, which was damaged at some point previously at least once, was similar to that of the SMH Angbu-ilgu, and this means that it is superficially similar with Treasure No 840, the stone horizontal sundial. In the concave hemisphere of both the stone Angbu-ilgus of the KMA and SMH, there are hour lines and 24 solar-term lines (13 line), and there is an intersection point where these lines meet the horizon, respectively. It can be verified that these intersections of these two Angbu-ilgus can be calculated as having a latitude of +37°39'15". The hour lines of the two stone Angbu-ilgus show that they were made after about 1900.

주제어

표/그림 (16)

그림 Figure 1. The stone Angbu-ilgu (Scape Sundial) of the Korea Meteorological Administration. (a) is the image of the relic looked down on from a bird's-eye view. (b) is the front view of the relic converted to an inverted gray image.
그림 Figure 2. The base part of the KMA's stone Angbu-ilgu. The bottom side of it is (a) and the side view of its replica is shown in (b).
그림 Figure 3. Circular stone plate (courtesy of NMMK)
그림 Figure 4. The stone Angbu-ilgu (Scape Sundial) of the Seoul Museum of History (inventory no. Seo 11751). (a) is the bird's-eye view of the relic and (b) is the front view of it.
그림 Figure 5. The horizontal circle of Angbu-ilgu from the front view. The horizon circle, (a), extracted from Figure 3 (b) shows the hour lines and solar-term lines projected from the semi-spherical surface. (b) is also the front view of Treasure No. 845 (small one) preserved by the National Palace Museum of Korea.
그림 Figure 6. Comparison of measurand (O) and the calculation (C) regarding the intersection points related to 24 solar terms lines and hour lines on the KMA Angbu-ilgu's hemispherical concave surface.
표 Table 1. The measurand related to 24 solar terms' points of the KMA Angbu-ilgu.
표 Table 2. The measurand related to points crossed by an hour line in the KMA Angbu-ilgu.
그림 Figure 7. The O-C values regarding points related to the 24 solar-terms lines and hour lines on the SMH Angbu-ilgu's hemispherical concave surface.
표 Table 3. The points of 24 solar-term lines and the hour lines measured from the SMH Angbu-ilgu.
그림 Figure 8. Comparison of the two stone Angbu-ilgus' inscriptions.
그림 Figure 9. The sketches of Angbu-ilgu; (a) is the Angbu-ilgu image on the back cover of the Joseon Civil Calendar (朝鮮民曆) for the year of 1931. (b) is the drawing of Treasure No. 845 (small one) (OCP, 1985).
그림 Figure 10. KMA Angbu-ilgu (Song et al., 1994).
그림 Figure 11. The 12 double-hour and 96 Parts carved on the rounding side (One part is 15 minutes).
그림 Figure 12. Angbu-ilgu and stone plate's chamfered edge. 1 and 2 are the vertex of SMH's and KMA's Angbu-ilgus, respectively. 3 to 6 are apex shapes of NMMK's plate stone; 3 is top-left, 4, top-right, 5, bottom-left, 6, bottom-right of Figure 4(a).
그림 Figure 13. Suppositional drawing of initial installation of original KMA Angbu-ilgu at Incheon Meteorological Center (仁川測候所). The bird's-eye view (a) of the original Angbu-ilgu is intact, which is set up on the stone round plate. (b) shows a cross section installed on the base of the original Angbu-ilgu (the round plate and cylinder stone).

참고문헌 (14)

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원문보기 상세보기
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원문보기 상세보기
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