# Fix occasional aliasing artifacts from AL decorrelation

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## Details

• Type: Story
• Status: To Do
• Resolution: Unresolved
• Fix Version/s: None
• Component/s:
• Labels:
None
• Story Points:
6
• Team:

## 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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## People

• Assignee:
Unassigned
Reporter:
David Reiss
Watchers:
David Reiss