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The Korean Astronomical Society (한국천문학회)
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FLAT-FIELDING FOR SOLAR FULL DISK Hα MONITORING SYSTEM OF KASI

한국천문연구원 Hα 태양전면관측시스템의 바닥고르기 연구

  • Park, H.M. (Dept. of Astronomy and Space Science, Chungnam National University) ;
  • Kim, Y.H. (Korea Astronomy and Space Science Institute) ;
  • Bong, S.C. (Korea Astronomy and Space Science Institute) ;
  • Park, Y.D. (Korea Astronomy and Space Science Institute) ;
  • Cho, K.S. (Korea Astronomy and Space Science Institute) ;
  • Jang, B.H. (Korea Astronomy and Space Science Institute) ;
  • Choi, S. (Korea Astronomy and Space Science Institute) ;
  • Nah, J. (Korea Astronomy and Space Science Institute) ;
  • Lee, S.M. (Korea Astronomy and Space Science Institute) ;
  • Chae, J. (Dept. of Physics and Astronomy, Seoul National University)
  • Published : 2008.12.31
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Abstract

We have performed the flat-fielding correction for the $H{\alpha}$ full-disk monitoring system of KASI (Korea Astronomy and Space Science Institute), which is installed in the Solar Flare Telescope (SOFT) at the top of Bohyun Mountain. For this, we used a new method developed by Chae (2004), to determine the flat pattern from a set of relatively shifted images. Using this method, we successfully obtained the flat pattern for $H{\alpha}$ full-disk observations and compared our result with the image observed in Catania Astrophysical Observatory. The method that we used in this study seems to be quite powerful to obtain the flat image for solar observations. In near future, we will apply this method for the flat-fielding correction of all solar imaging instruments in KASI.

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References

  1. Chae, J., 2004, Flat-Fielding of Solar H$\alpha$ Observations Using Relatively Shifted Images, Solar Physics, 221, 1 https://doi.org/10.1023/B:SOLA.0000033357.72303.89
  2. Kuhn, J. R., Lin, H., & Loranz, D., 1991, Gain Calibrating Nonuniform Image-Array Data Using Only The Image Data, PASP, 103, 1097 https://doi.org/10.1086/132932
  3. 박영득 등., 1997, 태양플레어망원경의 관측 시스템, PKAS, 12, 35
  4. 박영득 등., 2004, 태양전면감시기술개발, 한국천문연구 원 연구보고서, p48