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Astronomical Observation Environment Study focusing on Night Sky Brightness Variation under Light Pollution

광해에 따른 밤하늘의 밝기 변화를 중심으로 본 천문 관측 환경

  • Lee, Jin-Hee (Department of Earth Science Education, Seooul National University) ;
  • Choe, Seung-Urn (Department of Earth Science Education, Seooul National University) ;
  • Jung, Jae-Hoon (Department of Earth Science Education, Seooul National University) ;
  • Woo, Hong-Gyun (Department of Earth Science Education, Seooul National University)
  • 이진희 (서울대학교 지구과학교육과) ;
  • 최승언 (서울대학교 지구과학교육과) ;
  • 정재훈 (서울대학교 지구과학교육과) ;
  • 우홍균 (서울대학교 지구과학교육과)
  • Published : 2009.06.30

Abstract

By measuring the brightness of night sky, we have investigated light pollution around the observatory in the College of Education, Seoul National University. As a result of measuring the extinction coefficient and photometric constants by standardization, in January 28, 2009, the extinction coefficient found to be $k_B$=0.359 and photometric constant was $C_B$=4.397. In March 27, 2009, extinction coefficients were $k_B$=0.896 and $k_V$=0.725, and photometric constants were $C_B$=6.235 and $C_V$=6.027. Brightness of the night sky was measured from east, west, south, and north each by altitude of $20^{\circ}$, $40^{\circ}$, $60^{\circ}$, $75^{\circ}$ and $90^{\circ}$. Data reduction and analysis was based on IRAF. Seeings for the each day of observation were 5.1 and 5.7 arcseconds in January 28 and March 27, respectively. Night sky spanned the magnitude range of $16{\leq}m_V$, $m_B{\leq}18$ We found that the brightness of night sky located at downtown was twice to four times brighter. On these observational conditions, limiting magnitude within 40cm-telescope becomes 11-13 magnitudes. Compared with Jan 28 and Mar 27, night sky brightness of January is 1 magnitude fainter than that of March in B filter.

Keywords

light pollution;brightness of night sky;limiting magnitude

References

  1. 곽영순, 이양락, 김동영, 2006, 고교 선택과목 지구과학 I, II 교육과정 개정 방향. 제50차 한국과학교육학회 하계 학술대회 및 전국과학교사 현장연구 워크숍, 97-112
  2. Bowen, I.S., 1947, Notes from observatories: Limiting visual magnitude. Publications of the Astronomical Society of the Pacific, 59, 253-256
  3. Walker, M.F., 1973, Light pollution in california and Arizona. Publication of the Astronomical society of the Pacific, 85, 508-519 https://doi.org/10.1086/129496
  4. 한주용, 최승언, 2005, CCD를 이용한 천체관측 프로그램의 개발-서울대학교 사범대학 지구과학교육과 학부생을 대상으로-. 한국지구과학회 2005년도 추계학술발표회 및 정기총회, 188-195
  5. 네이버 지도: http;//map.naver.com (검색일: 2009. 2. 5.)
  6. Favero, G., Federici, A., and Blanco, A.R., 2000, Measurements of light pollution of Pauda. Memorie della Societa Astronomia Italiana, 71, 223-230
  7. Garstang, R.H., 2000, Limiting visual magnitude and night sky brightness. Memorie della Societa Astronomia Italiana, 71, 83-92
  8. Allen, C.W., 1973, Astophysical Quantities (3rd ed.). Athlone Press, London, UK, 26 p
  9. 성환경, 1995, 8개 젊은 산개성단의 UBV CCD 측광. 서울대학교 이학박사학위 논문, 30 p
  10. 박승재, 조희형, 1995, MIBL의 적용이 초등학생의 학업성취도 및 과학관련 정의적 특성에 미치는 효과. 초등과학교육, 25, 454-464
  11. Duriscoe, D.M., Luginbuhl, C.B., and Moore, C.A., 2007, Measuring night-sky brightness with a wide-field CCD camera. Publications of the Astronomical Society of the Pacific, 119, 192-213 https://doi.org/10.1086/512069
  12. Garstang, R.H., 1999, New Formula for Optimum Magnification and Telescopic Limiting Magnitude. Journal of the Royal Astronomical Society of Canada, 93, 80-83
  13. Dennefeld, M., 2002, Sky brightnes variations, limiting magnitudes and exposure times with large telescopes. In Vemin, J., Benkhaldoun, Z., Mu$\tilde{n}$oz-Tun$\acute{o}$n, C. (eds.), Astronomical Site Evaluation in the Visible and Radio Range, vol. 266. Astronomical Society of the Pacific conference, San Francisco, USA, 540-545
  14. 강용희 외, 1996, 최정산 위성추적소의 천체관측 환경에 관한 조사 연구 1. SEEING 및 야천광 관측과 위성추적소의 활용 방안. 천문학논총, 11, 177-196
  15. 김승환 외, 2008, 고등학교 천체 관측 동아리를 위한 방과 후 학교 프로그램 개발 및 적용: 관측지 주변 환경을 고려한 표준화 계수 결정 프로그램. 한국지구과학회지, 29, 495-505 https://doi.org/10.5467/JKESS.2008.29.6.495
  16. Garstang, R.H., 1999, New formula for telescopic limiting magnitues. The Journal of the American Association of Variable Star Observers, 27, p. 80
  17. 류주현, 유계화, 1997, 고등학교 과학I (하) 천문영역에 대한 STS 프로그램 적용이 학생들의 과학적 태도와 학업 성취도에 미치는 효과. 한국지구과학회지, 18, 473-479
  18. 기상청 홈페이지: http://www.kma.go.kr/intro.html (검색일: 2009. 3. 29.)