[daip] UNKNOWN POL message

Eric Greisen egreisen at nrao.edu
Mon Apr 2 12:22:49 EDT 2007


Brian Kent writes:
 > Dear DAIP,
 > 
 > I'm reducing some data for VLA project AK641 (extragalactic HI), and have
 > encountered a message that someone might be able to help with.
 > 
 > I am in the "Chapter 4" stage of initial calibration.  I have copied the 
 > tables over to my line data, used 'BPASS' and  'POSSM' to calibrate and 
 > examine the bandpass, etc.  However, I run into a problem when I use 
 > SPLIT:
 > 
 > I'm getting the following message when I try to use the task SPLIT:
 > 
 > CABORO> SPLIT1: UNKNOWN POLARIZATION PARAMETERIZATION =
 > CABORO> SPLIT1: PROBLEM WITH SOURCE: HI1208+115
 > CABORO> SPLIT1: FAILED TO SELECT VALID DATA
 > CABORO> SPLIT1: Destroyed UV image file: catno=      3 disk= 1
 > CABORO> SPLIT1: Purports to die of UNNATURAL causes
 > 

    Can you send me the output of IMHEADER for these data?

Eric Greisen


 > I searched and this is only DAIP archive message that I could find:
 > 
 > http://listmgr.cv.nrao.edu/pipermail/daip/2001-October/001797.html
 > 
 > I don't think that the case described case applies to me, however, the 
 > error message is the same.  Nevertheless, I tried copying the AN table 
 > over to the LINE data, just as I did with the FG and CL tables.  Still the 
 > same error message.
 > 
 > So, I tried to start over, and simply SPLIT the raw, uncalibrated data UV 
 > files, and I get the same result.
 > 
 > Have others encountered this message?  If there is any more information I 
 > can provide, please let me know.
 > 
 > Thanks for your time and help,
 > Brian Kent
 > 
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