Journal of the Korean earth science society (한국지구과학회지)

The Korean Earth Science Society (한국지구과학회)
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Patterns of Astronomical Seeing at KSA SEM Observatory

한국과학영재학교 천지인 천문대의 천문학적 시상 패턴

  • 강임석 (한국과학영재학교) ;
  • 이경훈 (한국과학영재학교 물리지구과학부)
  • Published : 2009.08.31
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Abstract

We report patterns of astronomical seeing at KSA SEMO (Korea Science Academy Space Earth and Man Observatory). Though the data of the seeing measured at the local observatory is essential in identifying the seeing of the observatory, systematic measurement of seeing has not been made in Pusan yet. For this reason, KSA SEMO adopted the Santa Barbara Instrument Group (SBIG) Seeing Monitor to constantly record the seeing. The seeing monitoring was done through an elaborate procedure involving direct CCD images in the focal plane which were subsequently analyzed for the full width at half maximum (FWHM) Gaussian widths. Based on the seeing monitoring for 8 months, we classified five patterns of the seeing at KSA SEMO: 'Sunset/Sunrise Effect', 'Extreme Fluctuation', 'Sudden Increment', 'Daily Variation' and 'Stable Condition'. Seeing was generally good from 1:00 am to 3:00 am than other times, and it was also better in Winter than in Summer.

한국과학영재학교 천지인 천문대의 천문학적 시상 패턴에 관한 연구를 수행하였다. 관측지의 시상 상황을 결정하기 위해서는 그 관측지에서 시상을 측정하여 데이터를 얻는 것이 가장 중요함에도 불구하고, 부산 지역에서 시상에 관한 체계적인 측정이 이루어지지 못하였다. 이러한 이유에서 본 천문대에서는 2008년 5월부터 SBIG사의 시상 모니터를 도입, 매일 시간별 시상을 꾸준히 측정하고 있다. 시상 측정은 CCD로 직접 천체 이미지를 촬영하여 FWHM지수를 추정하는 방식으로 이루어진다. 우리는 지난 8개월 동안 시상 모니터를 운영하면서 얻어진 한국과학영재학교 천지인 천문대에서의 시상 자료를 바탕으로 KSA SEMO에서의 시상 패턴을 'Sunset/sunrise Effect', 'Extreme Fluctuation', 'Sudden Increment', 'Daily Variation', 'Stable Condition' 등으로 분류하였다. 시상은 전반적으로 오전 1시에서 3시까지가 다른 시간대에 비하여 좋은 것으로 나타났으며, 여름의 시상이 겨울보다 좋았다.

Keywords

References

  1. Babcock, H.W., 1953, The possibility of compensating astronomical seeing. Publications of the astronomical society of the pacific, 65, 229-236 https://doi.org/10.1086/126606
  2. Barletti, R., Ceppatelli, G, Paterno, L., Righini, A., and Speroni, N., 1977, Astronomical site testing with balloon borne radiosondes. Astronomy and Astrophysics, 54, 649-659
  3. Birney, D.S., 1998, Observational Astronomy. Cambridge University Press, Cambridge, UK, 100 p
  4. Coulman, C.E., 1985, Fundamental and applied aspects of astronomical seeing. Annual Review of Astronomy and Astrophysics, 23, 19-57 https://doi.org/10.1146/annurev.aa.23.090185.000315
  5. Hardy, J.W., 1998, Adaptive optics for astronomical telescopes. Oxford University Press, NY, USA, 10p
  6. Keller, G, 1953, Astronomical 'seeing' and its relation to atmospheric turbulence Part 1. The Astronomical Journal, 58, 113-125 https://doi.org/10.1086/106830
  7. Khetselius, v.G and Tertitskii, M.l., 1976, Short-term forecasting of astronomical seeing conditions. Pis'ma v Astronomicheskii Zhurnal, 2, 315-216
  8. Lawrence, IS., Ashley, C.B.A., Tokovinin, A., and Travouillon, T., 2004, Exceptional Astronomical Seeing Conditions Above Dome C in Antarctica. Nature, 431, 278-281 https://doi.org/10.1038/nature02929
  9. Lee, SJ. and Hyung, S., 2008, Photoionization Models for Planetary Nebulae: Comparison of Predictions by NEBULA and CLOUDY, Journal of Korean Earth Science Society, 29, 419-427 https://doi.org/10.5467/JKESS.2008.29.5.419
  10. Loewenstein, R.F., Bero, C., Lloyd, IP., Mrozek, F., Bally, I, and Theil, D., 1998, Astronomical Seeing at the South Pole. ASP Conference Series, 141,296-302
  11. Murtagh, F. and Sarazin, M., 1993, Nowcasting astronomical seeing: A study of ESO La Silla and Paranal. Publications of the Astronomical Society of the Pacific, 105, 932-939 https://doi.org/10.1086/133258
  12. Neimeier, D., Teare, S.w., Klinglesmith, D., Loos, G, Euart, N., Truesdell, L., and Romeo, v., 2003, Astronomical seeing at the Magdalena Ridge Observatory. The Observatory, 123, 25-31
  13. Peach, D., 2006, Predicting astronomical seeing in the UK. Journal of the British Astronomy Association, 116, 11-14
  14. Shcheglov, P.Y. and Guryanov, A.E., 1991, Astronomical seeing at several sites in the USSR. Soviet Astronomy, 35, 632-638
  15. Vemin, J. and Munoz-Tunon, C., 1984, Optical seeing at La Palma Observatory, Astronomy and Astrophysics: 1. General guidelines and preliminary results at the Nordic Optical Telescope, 284, 311-318
  16. Walker, M.F., 1971, Polar Star-Trail Observations of Astronomical Seeing in Arizona. Baja California, Chile, and Australia. Publications of the Astronomical Society of the Pacific, 83, 401-422 https://doi.org/10.1086/129147
  17. Wilson, R.W., O'Mahony, N., Packham, c., and Azzaro, M., 1999, The seeing at the William Herschel Telescope. 309, Monthly Notces of the Royal Astronomical Society, 379-387 https://doi.org/10.1046/j.1365-8711.1999.02840.x
  18. Yoo, K.H., Kim, K.M., Lee, B.C., Yoon, T.S., Lee, l.A., and Kang, Y.H., 2005, Spectral line Variations of the Symbiotic Variable CH Cygni. Journal of Korean Earth Science Society, 26, 160-165
  19. Yuk, I.S., Kyeong, J.M., Chun, M.Y., and Kwon, S.G, 2003, Measurement of seeing using a small telescope system. Publications of the Korean Astronomical Society, 18, 37-41 https://doi.org/10.5303/PKAS.2003.18.1.037
  20. Korea Astronomy and Space Science Institute: http://klttest.kasi.re.kr/htrnI/GMT/gmUite.htm (Date: 2009.8.10)
  21. Korea Meteorological Administration Weather Information: http://www.kma.go.kr/(Date: 2009.8.8)
  22. SBIG Seeing Monitor Online Catalogue: http://www.sbig.com/sbwhtrnls/online.htm (Date: 2009.2.1)