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ひので SOT SP データ解析
データ解析ゼミ 2014.5.15 一本
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 Spectro-
Polarimeter” , 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 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
3
SOT ポラリメータの構成
Pupil image
HDM
Polarization modulator unit (PMU)
CTM-TM
OTA
M1M2
FG/NFI
SP
FG-CCD
SP-CCD left/right
SP- Polarization analyzer (polarizing beam splitter)
NFI- Polarization analyzer
Non-polarizing beam splitter
Collimator lens unit (CLU)
Tunable filter
Slit scan mirror
Mask wheelMech. shutter
Astigmatism corrector lens (ACL)
Reimaging lens
Slit
Blocking filter wheel
1 rev./1.6 sec
16 frames/sec
4
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15+ + + + + + + + + + + + + + + + I’+ - - + + - - + + - - + + - - + Q’+ + - - + + - - + + - - + + - - U’- - - - + + + + - - - - + + + + V’
PMU segment
Q
U
V
Polarization modulation and demodulation
SP onboard demodulation
Waveplate angle [deg.]
5
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)
データの探し方NAOJ ひのでサイエンスセンター QLhttp://hinode.nao.ac.jp/QLmovies/
LMSAL operation info.https://sot.lmsal.com/operations/timeline/
SP4D20070228_183214.2.fits level-0
I -Q -U -V I Q U V
SP 生データ
9
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
SP4D20070228_183214.2C.fits level-1
I Q U V
SP 1次処理データ
FPP
+Q
+U -U
View from the top of SOT
-Q
-V
+V
View towards the sun
S/C +Y
S/C +X
W
N
S
E +Q
-Q-U +U
-V
+V
Definition of SOT polarization coordinate
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.
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.
簡易マップ作成 ; simple_iquvmap.pro (一本製)
; smap:[*,*,k] kvname=[ 'continuum', $ ; 0
'Q', $ ; 1'U', $ ; 2'V', $ ; 3
; 'NCP (6302)', $ ; 4'Dopp. (CG)', $ ; 5'Dopp. (6301 botm)', $ ; 6'Dopp. (6301 wing 0.8)', $ ; 7'I (6301 core)', $ ; 8'total rss(circluar)', $ ; 9'total rss(linear)', $ ; 10'Dopp. (6302 I+V botm)', $ ; 11'Dopp. (6302 I+V wing 0.8)', $ ; 12'Dopp. (6302 I-V botm)', $ ; 13'Dopp. (6302 I-V wing 0.8)', $ ; 14'NCP (6301)', $ ; 15'V (6302+0.365)', $ ; 16'V (6302-0.276)', $ ; 17'V (6301)' $ ; 18]
dir=‘level-1 ディレクトリ \' 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 =75
l0 -10 ~ l0 -2 l0 +2 ~ l0 +10
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
;------------------------------------------date='20071015';------------------------------------------dir='/nfs/scr01/ichimoto/spcal/'+dateinvdir='/nfs/scr01/ichimoto/spcal/meinv'outdir=invdir
sp_meinv.pro (一本製) ;------ data(*,*,i) --------------------------------------; 0 Field strength Gauss; 1 Field inclination degree; 2 Field azimuth degree; 3 Doppler shift 630.15nm km/sec; 4 Doppler shift 630.25nm km/sec; 5 Doppler width mA; 6 Line strength non-dim; 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)