[daip] daip Help-- Thanks

[Ching-Li Chen]

Hi,

I was trying to combine two data sets with DBCON, and I received the following message  
that "FQIDS HAVE NOT BEEN RESET AS THEY SHOULD DUE TO FQTOL OR DUE TO THERE BEING NO FQ 
RANDOM PARAMETER.' However, the task "Appears to have ended successfully" and did 
produce a combined data set. So I was wondering whether that will cause a problem as I 
proceed to combine more data, etc. If it will, how should I proceed instead? 

The VLA datasets I'm trying to combine are AY0152 (CBand,AArray), AM0192(CBand,AArray), 
AA0068(CBand,BArray), and AJ0162(CBandDArray). Both AY152 and AM192 each have two IFs 
and four stokes while AA68 and AJ162 each has only one IF and one stoke. 

Therefore, I first used SPLIT to separate AY152 and AM192 into individual uv-data with 
only one IF and one stoke then combined those individual datasets using DBCON. (I've 
only done so with IF 1, not 2 yet. But while I was doing so, I received the error 
message that the "stokes ranges do not overlap." Therefore,I used "puthead" to change 
all the coordinate values of the stokes to -1, and that worked.) 

Subsequently, I attempted to combine the resulting DBCON data with both IF 1 data from 
AY152 and AM192 of all stokes with the AA68 dataset (AA68 has three frequency IDs, but 
I'm currently only working with FQID 2), which is when I ran into the error message. 

I was using the default inputs with the FQTOL set to -1, but I have since tried it with 
it set to 1, and still received the same error message. I also checked my data, and each 
of them has a FQ table. In addition, while the frequencies for AY152 and AM192 are the 
same, the frequencies for AA68 and AJ162 are not. 

AY152 and AM192 
FREQ         1   4.8851000E+09       1.00  5.0000000E+07    0.00 

AA68 
FREQ         1   4.5851000E+09       1.00  3.4375000E+07    0.00 

AJ162 
FREQ         1   4.8300630E+09       1.00  4.6386720E+06    0.00 

Furthermore, I was wondering whether the image made from the resulting DBCON data will 
have errors if DBCON sent the following messages: 

HERCUL> DBCON1: Task DBCON  (release of 31DEC10) begins 
HERCUL> DBCON1: RA does not match, will shift second 
HERCUL> DBCON1: DEC does not match, will shift second 

HERCUL> DBCON1: RA and DEC match to within 1 microarcsecond each 
HERCUL> DBCON1: --I'm not going to shift positions


Thank you so much for your help!
Vivian