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Stokes spectra 2014.2.23. Tetsu Anan. Before DST calibration. 20140223scan012_iquv_d.gif. After DST calibration. 20140223scan012_iquv_d_co.gif. DST calibration. Calibration by using polarization in continuum. Calibration on 2013.5.5. X N = −0.0187 、 τ N = −10.3° 、 X C = 0.0154 、 - PowerPoint PPT Presentation
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Stokes spectra2014.2.23
Tetsu Anan
Before DST calibration20140223scan012_iquv_d.gif
After DST calibration20140223scan012_iquv_d_co.gif
DST calibration
XN = −0.0187、 τN = −10.3°、 XC = 0.0154、τC = −6.78°、 Sc = 0
XN = −0.0200、 τN = −10.3°、 XC = 0.0200、τC = −5.00°、 Sc = 0
Calibration on 2013.5.5 Calibration by using polarization in continuum
Better
After DST “re”calibration20140223scan012_iquv_d_cn.gif
After DST “re”calibrationHigh contrast( ±0.5%)
20140223scan012_iquv_d_cn_2.gif
Continuum offsetHigh contrast( ±0.5%)
refer to polarization in continuum between white lines
20140223scan012_iquv_d_cn_con.gif
Remove fringe, Casini’s methodHigh contrast( ±0.5%)
20140223scan012_iquv_d_cn_con_casini1.gif
Remove fringe, Casini’s methodHigh contrast( ±0.1%)
20140223scan012_iquv_d_cn_con_casini1_1.gif
Remove fringe, Casini’s method、 SiHigh contrast( ±0.5%)
20140223scan012_iquv_d_cn_con_casini1si.gif
Summary
• Save data– He : 20140526_7.sav– Si : 20140527_1.sav
Sign of V
• NOAA11982、黒点は波長短い方が負