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  1. Data Management
  2. DM-21702

Investigate the cause of the high number of false sources in convolveTemplate=False image differencing

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    • AP F19-5 (October), AP F19-6 (November)
    • Alert Production

    Description

      ip_diffim has the bool configuration option convolveTemplate implemented. With convolveTemplate=False, it switches the roles of the science and template images and performs the AL convolution of the science image to match the template. For cases when the science image is sharper than the template convolveTemplate=False and doDecorrelation=True setup should perform as well as the "baseline" case when the template is the sharper one and it is convolved.

       

      The resulting difference image is bad quality, indicated by an order of magnitude (~ 10 times) more sources detected (half positive, half negative approximately).

      This ticket covers the work by gkovacs to investigate the cause of this bug.

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            DM-21700 Theoretically, this should not affect the AL subtraction.

            gkovacs Gabor Kovacs [X] (Inactive) added a comment - - edited DM-21700 Theoretically, this should not affect the AL subtraction.

            This is just the cover ticket of my experiments with the science image convolution. Can we close it perhaps at the sprint planning?

            gkovacs Gabor Kovacs [X] (Inactive) added a comment - This is just the cover ticket of my experiments with the science image convolution. Can we close it perhaps at the sprint planning?

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              gkovacs Gabor Kovacs [X] (Inactive)
              gkovacs Gabor Kovacs [X] (Inactive)
              Eric Bellm
              Eric Bellm, Gabor Kovacs [X] (Inactive)
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