[daip] [!9045]: AIPS - FLUX cutoff in task MOMNT

[Yogesh Chandola]

Yogesh Chandola updated #9045
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              Status: Open (was: Closed)

FLUX cutoff in task MOMNT 
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           Ticket ID: 9045
                 URL: https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/9045
           Full Name: Yogesh Chandola
               Email: yogesh.chandola at gmail.com
             Creator: User
          Department: AIPS Data Reduction
       Staff (Owner): Eric Greisen
                Type: Issue
              Status: Open
            Priority: Default
      Template Group: Default
             Created: 28 September 2016 07:23 AM
             Updated: 28 September 2016 04:14 PM



Hi Eric,

   Thanks. I understand that CELLSIZE is in pixel and refers to the width of smoothing functions. However, it is not clear to me how A and B are derived in particular cases of Hanning and Gaussian smoothing.
e.g. if 3 pixel Hanning smoothing is done, then A=2. This will mean the FLUX value will be (1.5 to 4)*RMS/sqrt(2) (assuming no smoothing in spatial coordinates) according to this equation. This puzzles me as 3 pix Hanning smoothing should change the noise in each pix by (sqrt(6)/4)*RMS (Verheijen & Sancisi 2001), and hence the FLUX values should be multiple of it. 

Yogesh

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