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Data processing of a solar filament using tunable H-a filter
Hyungmin Park1,3, Jongchul Chae2, Yong-Jae Moon3, Young-Deuk Park3
1Dept. of Astronomy and Space Science, Chungnam National University
2SEES, Seoul National University
3Korea Astronomy and Space Science
Institute
A prominence (filament) is one of the
prominent features on the Sun. Usually Ha observations of filaments have been
performed at a single specified wavelength, centerline or blue/red wing. But
these observations are limited to the Ha morphology and its time evolution. In
this study, we present imaging spectroscopy of a solar filament using a tunable
H-alpha filter (FWHM=0.25Å) which could scan five wavelengths
(-0.65Å,-0.35Å,-0.05Å,+0.25Å, and +0.55Å) with a very fast (30 fps) CCD camera.
Our observation of the filament was carried out on 2004 August 4 at Big Bear
Solar Observatory using 10 inch telescope. To minimize seeing effect, we
adopted a method to select the best frame out of 30 frames according to the
contrast measure. Then we applied various data analysis methods such as
masking, subtraction of bias/dark, flat fielding, filtering, enhancement to
these multi-wavelength data. In this talk, we introduce how to do data analysis
and their main results.
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어제 열시경에 교수님의 전화를 받고, 급하게 만든 것..
두시에 수업이라서 그때까지 쓰고, 박사님과 같이 수정하고, 교수님께 보여드렸다.
괜찮다고 하셔서 그대로 제출..
요즘 하는 일들이 다 이런 식이다.
발표가 있으면 그 전 날 밤을 꼬박 새워야하고, 숙제가 있거나 과제가 있어도 그렇게 해야하고...
좀 더 여유를 가지고서 생활했으면..
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