ひので SOT SP データ解析 データ解析ゼミ 2014.5.15 一本 SOT Spectro-Polarimeter 光球のベクトル磁場(Bx, By, Bz)、視線速度場(v)、温度(T) の3次元分布(x, y, t)として求める装置。 時間分解能 > 数時間 空間分解能 x 精度 世界最高 SP 参考文献 • Hinode Solar Optical Telescope Data Analysis Guide, 2008.1.23 • ”The Hinode Spectro-Polarimeter”, Lites etal., 2013, Sol.Phys..283..579L • “The SP_PREP Data Preparation Package for the Hinode SpectroPolarimeter” , Lites and Ichimoto, 2013, Sol.Phys..283..601L • 国立天文台ひのでサイエンスセンター http://hinode.nao.ac.jp/index.shtml SOT ポラリメータの構成 Collimator lens unit (CLU) Polarization modulator unit (PMU) 1 rev./1.6 sec HDM CTM-TM Astigmatism corrector lens (ACL) M2 M1 Mech. Mask wheel shutter NFI- Polarization analyzer Reimaging lens Tunable filter FG/NFI Non-polarizing beam splitter FG-CCD Blocking filter wheel SP Slit scan mirror Slit SP- Polarization analyzer (polarizing beam splitter) SP-CCD left/right 16 frames/sec 3 Polarization modulation and demodulation V U Q Waveplate angle [deg.] PMU segment SP onboard demodulation 0 + + + - 1 + + - 2 + - 3 + + - 4 + + + + 5 + + + 6 + + 7 + + + 8 + + + - 9 10 11 12 13 14 15 + + + + + + + - + + + + - + + - - + + + + I’ Q’ U’ V’ 4 SOT observables FG: - simple image - Dopplergram (2 wavelengths) - Stokes IV - Stokes IQUV - IVDG (2 wavelengths) SP: - normal mode (0.16” step, 4.8s/slit) - fast mode (0.32” step, 3.2s/slit) - dynamic mode (0.16” step, 1.6s/slit) - deep mode (0.16” step, 9.6s/slit) 5 データの探し方 NAOJ ひのでサイエンスセンターQL http://hinode.nao.ac.jp/QLmovies/ LMSAL operation info. https://sot.lmsal.com/operations/timeline/ SP 生データ SP4D20070228_183214.2.fits I -Q -U level-0 -V I Q U V sp_prep.pro (標準ソフト) 処理内容: - ダーク・フラット補正 偏光校正 分散方向の傾き補正 スペクトルの曲がり補正 CCD両サイド(直交スペクトル)の結合 波長反転 周回ドリフト補正 使い方: ex_sp_prep2.pro HSC にて @/home/ichimoto/idlpro/solarb/analysis/file_io/sot_filelist.pro ;topdir ='/isas/data/solarb_fits/sot/QuickLook' topdir ='/isas/data/hinode_fits/sot/level0' date='20070202' & start_time=date+'_121300' & end_time=date+'_150000‘ outdir='/nfs/scr01/ichimoto/spcal/'+date+'/‘ files=sot_filelist('SP4D',start_time,end_time,topdir=topdir) sp_prep, files, outdir=outdir, /verbose; end 9 SP 1次処理データ SP4D20070228_183214.2C.fits I level-1 Q U V Definition of SOT polarization coordinate This definition is applied to the Stokes vectors obtained after application of the X-matrix. Raw Stokes products of FPP are not consistent with this definition. -Q -U +U N -V -Q -U FPP +U W +Q E +Q +V -V S/C +Y +V S S/C +X View from the top of SOT View towards the sun This definition is the same as that used in the analysis of the suntest data of 2004.8 and consistent with the ASP definition, ie. positive V at blue side of spectral line gives positive magnetic flux. This is also consistent with the definition of Stokes V: (right circ. – left circ.), where right circular polarization is positive when electric vector rotates clockwise looking at the source. 簡易マップ作成; simple_iquvmap.pro (一本製) ; smap:[*,*,k] 'continuum', $ 'Q', $ 'U', $ 'V', $ ; 'NCP (6302)', $ 'Dopp. (CG)', $ 'Dopp. (6301 botm)', $ 'Dopp. (6301 wing 0.8)', $ 'I (6301 core)', $ 'total rss(circluar)', $ 'total rss(linear)', $ 'Dopp. (6302 I+V botm)', $ 'Dopp. (6302 I+V wing 0.8)', $ 'Dopp. (6302 I-V botm)', $ 'Dopp. (6302 I-V wing 0.8)', $ 'NCP (6301)', $ 'V (6302+0.365)', $ 'V (6302-0.276)', $ 'V (6301)' $ ] dir=‘level-1 ディレクトリ\' vname=[ spos=0 0 全体 1 scan とみなす 20 1scan 20 slit pos の繰り返しと見なす 様々な量の2次元マップsmap[*,*,*] をつくり dir\smap.isv に保存。 例えば Q-map は下の波長領域を積分 l0 -10 ~ l0 -2 l0 +2 ~ l0 +10 l0 =75 k ;0 ;1 ;2 ;3 ;4 ;5 ;6 ;7 ;8 ;9 ; 10 ; 11 ; 12 ; 13 ; 14 ; 15 ; 16 ; 17 ; 18 磁場へ変換 Stokes インバージョン HSC ME インバージョンコード by Yokoyama 他 sp_meinv.pro (一本製) ;------ data(*,*,i) -------------------------------------; 0 Field strength Gauss ; 1 Field inclination degree ;-----------------------------------------; 2 Field azimuth degree date='20071015' ; 3 Doppler shift 630.15nm km/sec ;-----------------------------------------; 4 Doppler shift 630.25nm km/sec dir='/nfs/scr01/ichimoto/spcal/'+date 5 Doppler width mA invdir='/nfs/scr01/ichimoto/spcal/meinv' ; ; 6 Line strength non-dim outdir=invdir ; 7 Damping parameter non-dim ; 8 Source function non-dim ; 9 Source function gradient non-dim ; 10 Macro-turbulence km/sec ; 11 Straylight fraction non-dim ; 12 Straylight shift mA ; 13 Continuum intensity DN ; 14 Polarization degree マップ表示 show_maps.pro (一本製)