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  1. Data Management
  2. DM-11993

Fix occasional aliasing artifacts from AL decorrelation

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    • Type: Story
    • Status: Invalid
    • Resolution: Done
    • Fix Version/s: None
    • Component/s: ip_diffim
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      Description

      Occasional issues with AL decorrelation, which lead to strange fringing/periodic wave-like artifacts. The cause is unknown and the situation is not completely understood; probably related to the shape/structure of the PSF matching kernel. Note that if the term in the denominator of the expression for $\psi(k)$ is too close to zero, it will lead to large values in the kernel, which could lead to strange aliasing artifacts in the resulting decorrelated diffim. Again, this is a rare occurrence.

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              Assignee:
              Unassigned Unassigned
              Reporter:
              reiss David Reiss
              Watchers:
              David Reiss
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