[논문]조선 세종대에 창제된 정남일구 복원모델 연구

박지원; 민병희; 김상혁; 김용기

doi:10.5303/pkas.2023.38.1.001

조선 세종대에 창제된 정남일구 복원모델 연구
STUDY ON THE RESTORATION MODEL OF JEONGNAM-ILGU, CREATED DURING THE REIGN OF KING SEJONG OF THE JOSEON DYNASTY 원문보기

천문학논총 = Publications of the Korean Astronomical Society, v.38 no.1, 2023년, pp.1 - 12

박지원 (충북대학교 천문우주학과) , 민병희 (충북대학교 천문우주학과) , 김상혁 (한국천문연구원) , 김용기 (충북대학교 천문우주학과)

Abstract ▼ AI-Helper

Numerous Sundials were fabricated during the reign of King Sejong of the Joseon Dynasty. One among them is Jeongnam-Ilgu (the Fixing-South Sundial), where the time can be measured after setting up the suitable meridian line without a compass. We reconstructed the new Jeongnam-Ilgu model based on the records of 'Description of Making the Royal Observatory Ganui (簡儀臺記)' in the Veritable Record of King Sejong. Jeongnam-Ilgu has a summer solstice half-ring under a horizontal ring which is fixed to two pillars in the north and south, and in which a declination ring rotates around the polar axis. In our model, the polar axis matches the altitude of Hanyang (that is Seoul). There are two merits if the model is designed to install the polar axis in the way that enters both the north and south poles and rotates in them: One is that it is possible to fix the polar axis to the declination ring together with the cross-strut. The other is that a twig for hanging weights can be protruded on the North Pole. The declination ring is supposed to be 178 mm in diameter and is carved on the scale of the celestial-circumference degrees on the ring's surface, where a degree scale can be divided into four equal parts through the diagonal lines. In addition, the time's graduation that is drawn on the summer solstice half-ring makes it possible to measure the daytime throughout the year. An observational property of Jeongnam-Ilgu is that a solar image can be obtained using a pin-hole. The position cast by the solar image between hour circles makes a time measurement. We hope our study will contribute to the restoration of Jeongnam-Ilgu.

주제어

표/그림 (12)

그림 Figure 1. The bird-eye view of South-Fixing Sundial by (a) Needham et al. (1986) and (b) its replica.
그림 Figure 2. The bird-eye view of South-Fixing Sundial by (a) Lee and Kim (2011) and (b) its replica magnified by 3 times.
그림 Figure 3. Half-ring's designs on South-Fixing Sundial’s model in (a) Needham et al. (1986), (b) Lee and Kim (2011) and (c) our study. The North is downward in all pictures.
표 Table 1. The specification of South-Fixing Sundial. (1 ja(尺)= 207 mm)
그림 Figure 4. Bird's-eye view of the South-Fixing Sundial model.
그림 Figure 5. Declination ring and Alidade. There is a declination ring (四游環) with 1/4 degree scale. (a) 1/4 degree scale represented in Joseon artifact usually, (b) 1/4 degrees scale described in the Simplified Sun-and-Star Time-Determining Instrument (小日星定時儀), which looks like a transversal scale having been drawn in the Tycho Brahe's mural quadrant (Chapman, 1989).
표 Table 2. The specification of South-Fixing Sundial. (1 ja = 207 mm)
그림 Figure 6. The top view of the South-Fixing Sundial model focused on the halved ring of summer solstice under the horizon ring, (a) with the declination ring not being visible and (b) only the lower part of the declination ring being visible.
표 Table 3. Yearly day number of and polar distance on each day of the 24 solar terms.
그림 Figure 7. Inside declination ring with NCR86 model, (a) the sun image on the alidade through the pin-hole, (b) rectangle hole of its ring.
그림 Figure 8. As time passes, the moving direction of the solar image of a South-Fixing Sundial (b) in comparison with grid-like lines of an Angbuilgu (Scaphe Sundial) (a) in the concave spherical surface. The red arrow line is the moving direction of the solar image when the north biased to the west.
그림 Figure 9. As time passes, the moving direction of the solar image of a South-Fixing Sundial (b) in comparison with grid-like lines of an Angbuilgu (Scaphe Sundial) (a) in the concave spherical surface. The red arrow line is the moving direction of the solar image when the north biased to the east.

참고문헌 (20)

Ahn, S. -H., 2021, Geomagnetic declination derived from？the positional records of Martian retrograde motion？in 1491, Publicaion of Astronomical Society of Japan？73(4), 1166-1185
Chapman A., 1989, Tycho Brahe - Instrument designer,？observer and mechanician, Journal of British？Astronomical Association 99(2), 70-77
Kim, S. H., Mihn, B. -H., & Kim, J. -Y., 2022, Analysis？of Angbu-ilgu, a stone material in the late Joseon？Dynasty, PKAS, in print.
Kim, S. H., 2007, A study on the Operation Mechanism？of Song I-yong's Armillary Clock, Chung-Ang？University, PhD thesis.
Kim, S. H., Mihn, B. -H., Ahn, Y. -S., Yang, H. J., & Lee, Y. S., 2014, Apparatus for Construing the？Heavens, Korea Study Information Co. (Paju),？pp.74-77
Lee, Y. S., 2003, The Diurnal and Nocturnal Time？Measure Using An Astronomical Instrument in？Joseon Dynasty, Bulletin of Korea Astronomy？Society 28(1), 123-133
Lee, Y. S., Jeong J. H., Kim, C. -H., & Kim, S. H.,？2006, The Principle and Structure of the Gyupyo？(Gnomon) of King Sejong's Reigh in Chosun？Dynasty, JASS, 23(3), 289-302
Lee, Y. S., Kim, S. H., Lee, M. S., & Jeong, J. H.,？2010, A Study on the Armillary Spheres of the？Confucianists in Joseon Dynasty, JASS 27(4),？383-392？ https://doi.org/10.5140/JASS.2010.27.4.383

원문보기 상세보기
Lee, Y. S. & Kim, S. H., 2011, A Study for the？Restoration of the Sundials in King Sejong Era,？JASS 28(2), 143-153？ https://doi.org/10.5140/JASS.2011.28.2.143

원문보기 상세보기
Lee, Y. S., Kim, S. H., & Mihn, B. -H., 2016, Family of？the Sun-and-Stars Time-Determining Instruments？(Ilseong- jeongsi-ui) Invented During the Joseon？Dynasty, JASS 33(3), 69-73？ http://dx.doi.org/10.5140/JASS.2016.33.3.69
Lee, Y. S., 2021, The excavation of an relics on Ilseong-Jeongsi-ui, the Available Clock both for？Daytime and Nighttime made in the reign of the？King Sejong and Comparison to its epigonic artifacts, in Discovering Insa-dong in 2021, its achieve- ments and future direction, National Palace Museum？of Korea and Sudo Institute of Cultural Heritage？(seoul), pp.100-115
Malpas, B. D., 2014, Observing Sunspots Using A？Pinhole Camera, Articles of Coconino Astronomical？Society (http://www.coconinoastro.org)
Mihn, B. -H., Lee, K. -W., Kim, S. H., & Lee, Y. S.,？2013, The Role of a Cross-Bar and the Enlargement？of a Gnomon in Joseon Dynasty, PKAS 28(3), 1-9？ http://dx.doi.org/10.5303/PKAS.2013.28.3.001
Mihn, B. -H., Lee, K. -W., Ahn, Y. S., & Lee, Y. S.,？2015, Scale Marking Method on the Circumference？of Circle Elements for Astronomical Instruments in？the Early Joseon Dynasty, JASS 32(1), 63-71？http://dx.doi.org/10.5140/JASS.2015.32.1.63

원문보기 상세보기
Mihn, B. -H., Lee, M. S., Choi, G., & Lee, K. -W.,？2016, Manufacturers of Astronomical Instruments？Invented During the Ganui-Dae Project in Joseon？Dynasty, PKAS 31(3), 77-85？ https://doi.org/10.5303/PKAS.2016.31.3.077

원문보기 상세보기
Mihn, B. -H., Choi, G., & Lee, Y. S., 2017,？Astronomical Instruments with Two Scales Drawn on Their Common Circumference of Rings in the Joseon？Dynasty, JASS 34(1), 45-54？ https://doi.org/10.5140/JASS.2017.34.1.45

원문보기 상세보기
Nam, M. -H., 1995, Korean Water-Clocks: Jagyongnu,？The Striking Clepsydra and The History of Control？and Instrumentation Engineering, Konkuk Univ. Press？(Seoul), pp.106-304
National Palace Museum of Korea (NPM), 2021,？Encounter With The Brilliant Scientific Technology？Of The Joseon Dynasty, NPM (Seoul), pp.42-45
Needham, J., Lu, G. -D, Combridge, J. H., & Major, J.？S., 1986, The Hall of Heavenly Records - Korean？astronomical instruments and clocks 1380-1780, Cambridge University Press (Cambridg), 89-91
Rufus, W. C., 1936, Korean Astronomy, the Transaction？of the Korea Branch of the Royal Asiatic Society？26, plate 16

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