[daip] [Fwd: About DBCON]

[Miguel Angel Perez-Torres]

Thanks a lot for your prompt and useful reply.

>
>      In the case that you are describing, you should be combining
> fully-calibrated, single source files with the NGC 7469 data.  The
> correct value for DOARRAY is 0, so that each observation will appear
> as a separate subarray in the DBCONed data set.  This completely
> solves the fact that the antenna files are different for each epoch.
>
	We indeed combined fully calibrated data sets, but two of them
had to be converted into multi-source files, so this could be the  
problem.

> Do be careful that all data sets before combination are brought to the
> same equinox (J2000 presumably).  UVFIX will help with that.
>
	Thanks also for this.
>
> However, no setting of DOARRAY should have any affect on the fluxes.
> DBCON does not change fluxes at all - if kiloJy come out then kiloJy
> went in almost certainly.  I suppose bad things could happen if you
> combined multi-source, uncalibrated data with calibration tables and
> then attempted to apply the tables to the non-corresponding data,  I
> will need to know much more about the data sets that go into the task
> and that which comes out to be able to provide you with better
> assistance.
>
> Eric Greisen
  We will let you know if we cannot succeed in appropiately combining  
the data.
Meanwhile, thanks a lot.

Best,
Miguel