public:meetings:glowbi2008:tutorial_monday

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public:meetings:glowbi2008:tutorial_monday [2010-11-15 08:46] – James M Andersonpublic:meetings:glowbi2008:tutorial_monday [2017-03-08 15:27] (current) – external edit 127.0.0.1
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 This tutorial session is intended to get people familiar with the basic concepts of radio interferometry.  The student will be introduced to interferometry data, visibilities, the //(u,v)// plane, calibration, and imaging.   This tutorial session is intended to get people familiar with the basic concepts of radio interferometry.  The student will be introduced to interferometry data, visibilities, the //(u,v)// plane, calibration, and imaging.  
 +
 +
 +History:
 +2008 Nov ?? Initial version
 +2010 NOv 14  Update for 31DEC10 AIPS
  
 ====== Step 1 --- Figure Out What to Observe (Reduce) ====== ====== Step 1 --- Figure Out What to Observe (Reduce) ======
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 '' ''
 +indisk 1\\
 pcat pcat
 '' ''
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 '' ''
-task 'quack'\\ 
-sources ' '\\ 
-stokes ' '\\ 
-bif 0\\ 
-eif 0\\ 
-timer 0\\ 
-antenna 0\\ 
-basel 0\\ 
-flagver 1\\ 
-opcode 'beg'\\ 
-reason 'bad start'\\ 
-aparm 0\\ 
-aparm(2) 15/60\\ 
-go\\ 
-antenna 6,0\\ 
-aparm(2) 35/60\\ 
-go\\ 
 task 'uvflg'\\ task 'uvflg'\\
 antenna 23,0\\ antenna 23,0\\
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 optype 'calc'\\ optype 'calc'\\
 aparm 0\\ aparm 0\\
-aparm(2)=3\\+aparm(2)=4\\
 zerosp 0\\ zerosp 0\\
 go\\ go\\
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 <file> <file>
-vlb054> SETJY1: Task SETJY  (release of 31DEC08) begins+vlb054> SETJY1: Task SETJY  (release of 31DEC10) begins
 vlb054> SETJY1: **WARNING: OPCODE=CALC AND FREQID =   -1 vlb054> SETJY1: **WARNING: OPCODE=CALC AND FREQID =   -1
 vlb054> SETJY1:      FREQID WILL BE RESET TO 1, CHECK YOUR RESULTS CAREFULLY vlb054> SETJY1:      FREQID WILL BE RESET TO 1, CHECK YOUR RESULTS CAREFULLY
-vlb054> SETJY1: A source model for this calibrator may be available +vlb054> SETJY1: A source model for this calibrator is available 
-vlb054> SETJY1: Use the verb CALDIR to see if there is one+vlb054> SETJY1: Consult the help file for CALRD for assistance
 vlb054> SETJY1: / Flux calculated using known spectrum vlb054> SETJY1: / Flux calculated using known spectrum
 vlb054> SETJY1: BIF =  1 EIF =  1 /Range of IFs vlb054> SETJY1: BIF =  1 EIF =  1 /Range of IFs
-vlb054> SETJY1: '3C286           ' IF =  1 FLUX =14.5979 (Jy calcd) +vlb054> SETJY1: '3C286           ' IF =  1 FLUX =14.6428 (Jy calcd) 
-vlb054> SETJY1: / Using (1990) VLA or Reynolds (1934-638) coefficients+vlb054> SETJY1: / Using (1995.2) VLA or Reynolds (1934-638) coefficients
 vlb054> SETJY1: Appears to have ended successfully vlb054> SETJY1: Appears to have ended successfully
-vlb054> SETJY1: vlb054       31DEC08 TST: Cpu=       0.0  Real=       0+vlb054> SETJY1: vlb054       31DEC10 TST: Cpu=       0.0  Real=       0
 </file> </file>
  
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 '' ''
  
 +UVFIX change in April means we have to regenerate NX table\\
 +
 +''
 +task 'indxr'\\
 +getn 3\\
 +cparm 0\\
 +cparm(3)= -1\\
 +bparm 0\\
 +go\\
 +''
  
  
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 uvrange 0\\ uvrange 0\\
 antennas 0\\ antennas 0\\
 +timer 0\\
 refant 24\\ refant 24\\
 weightit 1\\ weightit 1\\
  • Last modified: 2010-11-15 08:46
  • by James M Anderson