[daip] [!8690]: AIPS - Factor in CONVL

Eric Greisen noreply at nrao.edu
Mon Jul 18 15:49:42 EDT 2016


Eric Greisen updated #8690
--------------------------

       Staff (Owner): Eric Greisen (was: -- Unassigned --)
              Status: Closed (was: Open)
                 Due: - Cleared - (was: 20 July 2016 06:41 PM)

Factor in CONVL
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           Ticket ID: 8690
                 URL: https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/8690
           Full Name: Hansung Gim
               Email: hgim at astro.umass.edu
             Creator: User
          Department: AIPS Data Reduction
       Staff (Owner): Eric Greisen
                Type: Issue
              Status: Closed
            Priority: Default
      Template Group: Default
             Created: 18 July 2016 06:41 PM
             Updated: 18 July 2016 07:49 PM



The units are Jy/beam - you have increased the beam area by a factor of 17.25
but the noise went up only by a factor of 3 in Jy per the much larger beam.  You
are coming out ahead so long as the signal in Jy/(new beam) is larger by more than
a factor of 3.  

Eric Greisen
 



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