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Stokes spectra 2014.2.23

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 、

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Stokes spectra 2014.2.23

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  1. Stokes spectra2014.2.23 Tetsu Anan

  2. Before DST calibration 20140223scan012_iquv_d.gif

  3. After DST calibration 20140223scan012_iquv_d_co.gif

  4. DST calibration Calibration by using polarization in continuum Calibration on 2013.5.5 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 Better

  5. After DST “re”calibration 20140223scan012_iquv_d_cn.gif

  6. After DST “re”calibrationHigh contrast（±0.5%） 20140223scan012_iquv_d_cn_2.gif

  7. Continuum offsetHigh contrast（±0.5%） 20140223scan012_iquv_d_cn_con.gif refer to polarization in continuum between white lines

  8. Remove fringe, Casini’s methodHigh contrast（±0.5%） 20140223scan012_iquv_d_cn_con_casini1.gif

  9. Remove fringe, Casini’s methodHigh contrast（±0.1%） 20140223scan012_iquv_d_cn_con_casini1_1.gif

  10. Remove fringe, Casini’smethod、SiHigh contrast（±0.5%） 20140223scan012_iquv_d_cn_con_casini1si.gif

  11. Summary • Save data • He : 20140526_7.sav • Si : 20140527_1.sav

  12. Sign of V • NOAA11982、黒点は波長短い方が負

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