[daip] Trying to Combine WSRT with EVLA data

[Eric Greisen]

Danielle Lucero wrote:
> Hello,
> 
> I am trying to combine WSRT data with EVLA data.  I understand that I 
> need to make both data sets look as close to one another as possible.  I 
> have run UVSRT and INDXR on the WSRT data.  Then I ran SPECR to smooth 
> the data to 20 km/s.  When I try to image the WSRT uvsorted indexed and 
> smoothed cube I get the following. error:
> localh> IMAGR1: Task IMAGR  (release of 31DEC11) begins
> localh> IMAGR1: Doing no flagging this time
> localh> IMAGR1: FQINI: 'IF FREQ' COLUMN HAS NO VALUES
> localh> IMAGR1: FQINI: 'CH WIDTH' COLUMN HAS NO VALUES
> localh> IMAGR1: FQINI: 'TOTAL BANDWIDTH' COLUMN HAS NO VALUES
> localh> IMAGR1: FQINI: 'SIDEBAND' COLUMN HAS NO VALUES
> localh> IMAGR1: CHNDAT: FREQID =  -1 INVALID ON READ
> localh> IMAGR1: GAININ: CAN NOT READ CH/FQ TABLE
> localh> IMAGR1: OUVOPN: ERROR OPENING Input UVdata
> localh> IMAGR1: Purports to die of UNNATURAL causes
> 
> Actually, I get the following error when I try to image just the WSRT 
> UVSRT Indexed data.  I have specified the source name.  However, the 
> source name is not in all CAPS in LISTR output: 
> 
> localh> IMAGR1: Create UGC9519WSRT .IMAGR .   2 (UV)  on disk  3  cno   10
> localh> IMAGR1: Beginning channel    1 through    1 with  1 IFs
> localh> IMAGR1: IMACPY: NO DATA SELECTED
> localh> IMAGR1: IMACPY: ERROR COPYING Input UVdata
> localh> IMAGR1: TO UVdata work object
> localh> IMAGR1: Blanking channel    1 image plane
> localh> IMAGR1: OBRGET: KEYWORD CNO NOT FOUND
> localh> IMAGR1: KEYWORD =CNO
> localh> IMAGR1: OBRGET: PROBLEM WITH OBJECT: CLEAN field number 0001
> localh> IMAGR1: IMABLK: ERROR BLANKING CLEAN field number 0001
> localh> IMAGR1: Beginning channel    2 through    2 with  1 IFs
> 
> So what am I missing here?  Am I forgetting a step.  I know that I will 
> have to run FLOPM at some stage as well.

It would appear that SPECR trashes the FQ table - but given that it 
really should do clever things to it I am not totally surprised.  You 
have picked the worst day to e-mail on this - I leave in an hour or so 
for a 2 week vacation and will not be able to work on this until Nov 20 
or so.

If the source name has lower case letters you cannot enclose the string 
in quotes - thus

source = '3c286'

becomes '3C286'

but source(1) = '3c286

with a carriage return (Enter key) after the 6 leaves it '3c286'.  That 
may be the IMAGR issue with the pre-SPECR sorted data.

ERic Greisen