public:meetings:glowbi2008:tutorial_wednesday

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public:meetings:glowbi2008:tutorial_wednesday [2010-11-16 21:00] – James M Andersonpublic:meetings:glowbi2008:tutorial_wednesday [2017-03-08 15:27] (current) – external edit 127.0.0.1
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 ===== Web Image of 3C129 ===== ===== Web Image of 3C129 =====
  
-{{http://rsd-www.nrl.navy.mil/7210/7213/backgrnd/3c129_pub.jpg}}+{{https://www.nrl.navy.mil/rsd/sites/www.nrl.navy.mil.rsd/files/Images/radiogalaxy.jpg}}
  
 Wide-field 90 cm image of the large head-tail radio galaxy 3C129 (right). The bright source at the left is 3C129.1. From Lane et al., AJ, 123, 2985, 2002. Wide-field 90 cm image of the large head-tail radio galaxy 3C129 (right). The bright source at the left is 3C129.1. From Lane et al., AJ, 123, 2985, 2002.
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 task 'tasav'\\ task 'tasav'\\
 clro\\ clro\\
 +outdi 1\\
 go\\ go\\
 '' ''
 +
 ==== Run the polarization calibration on the phase calibrator ==== ==== Run the polarization calibration on the phase calibrator ====
  
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 timer 0\\ timer 0\\
 antenna 0\\ antenna 0\\
-uvrange 0\\+uvrange 20,0\\
 bif 0\\ bif 0\\
 eif 0\\ eif 0\\
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 soltype 'appr'\\ soltype 'appr'\\
 prtlev 1\\ prtlev 1\\
-refant 4\\+refant 3\\
 bparm 0\\ bparm 0\\
 cparm 0\\ cparm 0\\
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 <file> <file>
-vlb054> PCAL 1: Calibration source   1 +vlb054> PCAL 1: Calibration source   1   0420+417 
-vlb054> PCAL 1:   Q+iU=(   0.00444,  -0.04706) +/- (  0.000273,  0.000273) Jy +vlb054> PCAL 1:   Q+iU=(  -0.01935,   0.08692) +/- (  0.000536,  0.000536) Jy 
-vlb054> PCAL 1:   Pol. inten. =   0.04727 +/-  0.000386 Jy, angle = -42.30 +/- +vlb054> PCAL 1:   Pol. inten. =   0.08905 +/-  0.000758 Jy 
-vlb054>         0.165 deg +vlb054> PCAL 1:   Pol. angle  =  51.28 +/-  0.172 deg 
-vlb054> PCAL 1: 0420+417         I,Q,U,V =   1.3389  0.00444 -0.04706  0.00000 J +vlb054> PCAL 1: 0420+417         I,Q,U,V=   1.5092 -0.01935  0.08692  0.00000 Jy 
-vlb054>         y +vlb054> PCAL 1: Calibration source   1   0420+417 
-vlb054> PCAL 1: Calibration source   1 +vlb054> PCAL 1:   Q+iU=(   0.08929,  -0.01579) +/- (  0.000699,  0.000699) Jy 
-vlb054> PCAL 1:   Q+iU=(   0.02002,   0.03901) +/- (  0.000277,  0.000277) Jy +vlb054> PCAL 1:   Pol. inten. =   0.09068 +/-  0.000988 Jy 
-vlb054> PCAL 1:   Pol. inten. =   0.04385 +/-  0.000392 Jy, angle =  31.42 +/- +vlb054> PCAL 1:   Pol. angle  =  -5.02 +/-  0.221 deg 
-vlb054>         0.181 deg +vlb054> PCAL 1: 0420+417         I,Q,U,V=   1.5022  0.08929 -0.01579  0.00000 Jy
-vlb054> PCAL 1: 0420+417         I,Q,U,V =   1.3471  0.02002  0.03901  0.00000 J +
-vlb054>         y+
 </file> </file>
  
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 timer 0\\ timer 0\\
 antenna 0\\ antenna 0\\
-uvrange 0,45\\+uvrange 0\\
 docalib 1\\ docalib 1\\
 gainuse 2\\ gainuse 2\\
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 AIPS 1: Adverbs     Values                 Comments AIPS 1: Adverbs     Values                 Comments
 AIPS 1: ---------------------------------------------------------------- AIPS 1: ----------------------------------------------------------------
-AIPS 1: CLCORPRM    132.6554    -74.984    R-L phase difference returned+AIPS 1: CLCORPRM    -55.2632   -171.0893   R-L phase difference returned
 AIPS 1:            *rest 0 AIPS 1:            *rest 0
 </file> </file>
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 task 'tasav'\\ task 'tasav'\\
 clro\\ clro\\
 +outdi 1\\
 go\\ go\\
 '' ''
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 http://www.vla.nrao.edu/astro/calib/polar/1999/ http://www.vla.nrao.edu/astro/calib/polar/1999/
  
-Correct number is -21.71+Correct number is -22.98
  
  
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 '' ''
-for i=1 to 2;clcorp(i) = -21.71 - clcorp(i);end+for i=1 to 2;clcorp(i) = -22.98 - clcorp(i);end
 '' ''
 +
 ==== Apply the corrections ==== ==== Apply the corrections ====
  
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 timer 0\\ timer 0\\
 antenna 0\\ antenna 0\\
-uvrange 0,45\\+uvrange 0\\
 docalib 1\\ docalib 1\\
 gainuse 3\\ gainuse 3\\
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 ########################## ##########################
 +
 ===== Work on just the target data now ===== ===== Work on just the target data now =====
  
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 '' ''
 task 'split'\\ task 'split'\\
-getn 4\\ +getn 12\\ 
-source '3C129', ' '\\+source '0518+165','0134+329','0420+417','3C129', ' '\\
 timer 0\\ timer 0\\
 bif 0\\ bif 0\\
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 aparm 0\\ aparm 0\\
 go\\ go\\
-getn 13\\+getn 16\\
 go\\ go\\
 clrmsg\\ clrmsg\\
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 '' ''
 task 'dbcon'\\ task 'dbcon'\\
-getn 16\\ +getn 20\\ 
-get2n 17\\+get2n 26\\
 go\\ go\\
 pcat\\ pcat\\
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 <file> <file>
-AIPS 1:   18  101 3C129       .DBCON .    1 UV 13-NOV-2008 18:28:31+AIPS 1:   27  100 3C129       .DBCON .    1 UV 16-NOV-2010 22:13:56
 </file> </file>
 +
 ===== Imaging ===== ===== Imaging =====
  
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 '' ''
 task 'imagr'\\ task 'imagr'\\
-getn 18\\+default\\ 
 +getn 27\\
 stokes 'i'\\ stokes 'i'\\
 dopol 0\\ dopol 0\\
-cellsize 0.25,0.25\\+cellsize 0.15,0.15\\
 imsize 2048,2048\\ imsize 2048,2048\\
 clr2n\\ clr2n\\
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 niter 20000\\ niter 20000\\
 overlap 1\\ overlap 1\\
 +dotv 1\\
 go\\ go\\
 clrmsg\\ clrmsg\\
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 clrmsg\\ clrmsg\\
 '' ''
 +
 +
  
 ==== Check where the files went ==== ==== Check where the files went ====
  • Last modified: 2010-11-16 21:00
  • by James M Anderson