[daip] [!16835]: AIPS - Issue calibrating old (2002) VLBA dataset

Eric Greisen nraohelp at nrao.edu
Wed Sep 2 17:27:47 EDT 2020


Issue calibrating old (2002) VLBA dataset
-----------------------------------------

           Ticket ID: 16835
                 URL: https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/16835
                Name: Peter Breiding
       Email address: peter.breiding at mail.wvu.edu
             Creator: User
          Department: AIPS Data Reduction
       Staff (Owner): Eric Greisen
                Type: Issue
              Status: Open
            Priority: Default
                 SLA: NRAO E2E
      Template group: Default
             Created: 01 September 2020 09:12 PM
             Updated: 02 September 2020 09:27 PM
           Reply due: 07 September 2020 08:43 PM (4d 23h 15m)
      Resolution due: 29 May 2023 12:00 AM (998d 2h 32m)

On 9/2/2020 2:43 PM, Peter Breiding via Daip wrote:

I can look at the vlbafix question also - but I have noticed something. 
If one sets DOWEIGHT=-1 in FITLD the autocorr data have values 10^5 less 
while the cross corrs are the same.  The weights are changed by 10^6 and 
the weight scale code is very simple.  I do not understand and am 
debugging.  I think somehow this affects old VLBA data not recent or I 
would have had lots of complaints - including in my own data reductions

Eric




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