[daip] [!5492]: aips - BPASS mystery end channel problems

[Eric Greisen]

Eric Greisen updated #5492
--------------------------

       Staff (Owner): Eric Greisen (was: -- Unassigned --)
                 Due: - Cleared - (was: 17 September 2014 12:00 AM)

BPASS mystery end channel problems
----------------------------------

           Ticket ID: 5492
                 URL: https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/5492
           Full Name: Tracy Clarke
               Email: tracy.clarke at nrl.navy.mil
             Creator: User
          Department: AIPS Data Processing
       Staff (Owner): Eric Greisen
                Type: Issue
              Status: Open
            Priority: Default
                 SLA: NRAO E2E
      Template Group: Default
             Created: 14 September 2014 04:32 AM
             Updated: 15 September 2014 05:32 PM
      Resolution Due: 23 September 2014 12:00 AM (7d 6h 27m)



Have you looked at the end channel in detail?  Channel
1 always and channel N usually are not useful.  I agree
that the ****** seem excessive (it actually sums in log10
values and then converts) but the end channels are not
anything to worry about.  Channel 1 actually contains in
its lower half data from frequencies corresponding to
channel N+1/2 to N+1 unless for some reason things are
flipped around - making channel N the guaranteed bad one.
I did not think that P band did that but ???

Eric




------------------------------------------------------
Staff CP:  https://help.nrao.edu/staff